Υπενθυμίζουμε ότι η μηδενική χρέωση μέσω κινητής τηλεφωνίας ισχύει για τις ιστοσελίδες που αναφέρονται στο
 (δελτίο τύπου του ΥΠΑΙΘ), όπου περιλαμβάνονται τα Διαδραστικά Σχολικά Βιβλία  ( e-books.edu.gr ), η κεντρική πύλη αναζήτησης ΦΩΤΟΔΕΝΤΡΟ  ( photodentro.edu.gr ) και όλα τα Αποθετήρια Εκπαιδευτικών Πόρων Φωτόδεντρο ( photodentro.edu.gr/lor , photodentro.edu.gr/video ,  photodentro.edu.gr/edusoft ,  photodentro.edu.gr/ugc , photodentro.edu.gr/oep , photodentro.edu.gr/i-create ).
Η προβολή περιεχομένου που φιλοξενείται σε εξωτερικά αποθετήρια ή ιστοσελίδες εκτός των παραπάνω ή το άνοιγμα συνδέσμων που οδηγούν σε εξωτερικό περιεχόμενο δεν υπάγονται στη μηδενική χρέωση.
 
    | Όρος | Ορισμός | 
|---|---|
| saddle (n) | a leather seat that is used on the back of a horse or other animal to carry a rider 
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| safety (n) | the condition of being protected from or out of danger 
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| salary (n) | a fixed amount of money paid at regular times for the work a person has done 
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| samovar (n) | a large metal container used, especially in Russia, to heat water for tea 
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| sanctuary (n) | a holy or sacred place 
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| sand (n) | small grains of ground rock found on beaches and in deserts 
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| sandy (adj) | made of or like sand 
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| satisfy (v) | to give what is wanted or needed 
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| Saturn (n) | the second largest planet in the solar system and sixth in distance from the sun 
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| sauerkraut (n) | shredded cabbage that has been salted and allowed to ferment in its own juices 
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| sausage (n) | a mixture of chopped meat and spices stuffed into a casing of animal intestine 
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| savour (v) | to enjoy the taste or smell of 
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| saying (n) | a well-known statement, especially a proverb 
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| sayonara (n) | (Japanese) good-bye; farewell 
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| scale (n) | a set of notes played or sung in order, going up or down 
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| scare (v) | to frighten 
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| scatter (v) | to throw around in different directions 
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| scene (n) | the place where any event takes place 
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| schedule (n) | a plan of when certain actions or events will be carried out 
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| scholarship (n) | money given to students to help pay for their education 
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| science fiction (n) | stories about life in the future or in other parts of the universe 
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| scientist (n) | a person who works in some branch of science 
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| scope (n) | the range of a subject covered by a book, programme, discussion, class, etc. 
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| scorching (adj) | burning; very hot 
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| score (v) | to get points in a game or test 
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| scream (n) | a shrill, loud cry or sound 
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| scream (v) | to make a shrill, loud cry or sound 
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| screen (n) | a flat surface in a cinema, on a television or a computer system on which pictures or words are shown 
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| scribe (n) | a person whose job is to copy letters, books, or other written materials by hand 
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| script (n) | a set of letters used for writing a particular language 
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| scroll (n) | a roll of paper used to write or draw on 
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| scuba diving (n) | the act of swimming underwater while wearing special breathing equipment 
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| sculpt (v) | to make by carving or molding 
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| sculptor (n) | an artist who makes sculptures 
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| seabed (n) | the floor of an ocean or sea 
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| seafood (n) | any sea animal that is served as food 
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| seagull (n) | a bird which lives near the sea and has short legs, long wings and white and grey feathers 
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| seal (n) | a mammal with flippers instead of feet which spends most of its life in the ocean 
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| seascape (n) | a view of the ocean or a representation of it, such as a painting 
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| seat (v) | to assist to sit; provide with a place to sit 
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| seaweed (n) | a kind of alga that grows in salt water 
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| secondary school (n) | a school for children between the ages of 11 and 16 or 18 
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| seed (n) | the small part of a plant with flowers that grows into a new plant 
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| seek (v) | to try to find; look for 
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| Seine (n) | a river in northern France. It flows through Paris and into the English Channel. 
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| seize (v) | to take hold of in a quick, forceful way; grab 
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| select (v) | to choose; pick 
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| semi-detached (adj) | (of a house) joined to another house on one side but separate on the other 
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| semicircle (n) | one half of a circle 
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| senior citizen (n) | an older person, especially one who is past the age of sixty-five and retired 
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| sensational (adj) | very exciting or extremely good 
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| sensitive (adj) | easily upset by the things people say or do 
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| sensitize (v) | to make or become sensitive 
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| sensory (adj) | connected with the physical senses of touch, smell, taste, hearing and seeing 
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| separate (adj) | not connected or not attached 
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| separately (adv) | apart; not together; in a separate way 
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| servant (n) | a person whose job is to clean another person's house, cook their food, or help them in other ways in their home 
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| set (n) | the scenery for a play or movie 
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| set off (v) | to start a journey 
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| sew (v) | to make or repair with a needle and thread 
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| shake (v) | to move from side to side with very quick, small motions 
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| shaker (n) | a container for blending beverages by shaking their ingredients together 
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| shallow (adj) | not deep 
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| shame (n) | a painful feeling caused by knowing that you have done something wrong 
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| shape (n) | the physical form of something made by the line around its outer edge 
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| shape (v) | to give a certain form or shape to; mold 
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| share (v) | to receive, use, or enjoy together with one or more others 
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| shark (n) | a large fish that has sharp teeth and a triangular fin on its back which can sometimes be seen above the water 
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| sharp (adj) | biting to the sense of taste or smell 
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| sharpen (v) | to make thinner or finer, as a cutting edge or point 
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| sheet (n) | a thin, broad surface 
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| shine (v) | to give off or reflect light 
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| shoot (v) | to fire a bullet or an arrow, or to hit, injure or kill a person or animal by firing a bullet or arrow at them 
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| shopkeeper (n) | a person who manages or owns a shop 
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| shore (n) | the land beside an ocean, sea, lake, or river 
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| shot put (n) | a sports event in which a heavy metal ball is thrown as far as possible 
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| shout (v) | to call out loudly; yell 
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| shower (n) | a fall of rain that lasts a short time 
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| shy (adj) | quiet and not comfortable with other people 
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| Sicily (n) | a large island that is part of Italy and is at its southern tip 
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| sigh (v) | to breathe out with a long breath because of being sad, tired, or relieved 
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| sight (n) | something which you see, especially something interesting 
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| sign (n) | a mark or symbol that stands for a word or thing 
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| signature (n) | a person's written name, used to sign documents, letters, or checks 
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| silk (n) | a fine, soft, shiny fiber produced by certain insects 
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| similar (adj) | being almost the same as something else 
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| simultaneously (adv) | at the same time 
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| sincere (adj) | real and true; not pretended 
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| sink (v) | to fall slowly to a lower level 
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| site (n) | a place where something is built, or where something happened 
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| skate (n) | a shoe with either a blade or a set of small wheels attached to the bottom 
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| sketch (n) | a drawing or painting that was done in a hurry or without detail 
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| sketch (v) | to make a simple drawing of something 
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| skill (n) | the power or ability to perform a task well, especially because of training or practice 
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| skinny (adj) | very thin; having little fat on the body 
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| skip (v) | to jump about from one thing to another, ignoring or leaving out important details 
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| skyscraper (n) | a very tall building 
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| slam (v) | to shut with force and loud noise 
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| slanted (adj) | sloping in one direction 
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| sledge (n) | a heavy sled, drawn by horses or dogs, used to transport heavy loads over snow and ice 
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| slice (n) | a part or segment of anything 
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| slice (v) | to divide into slices 
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| slide (n) | a large object that children climb and slide down as a game 
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| slide (v) | to move easily along a surface 
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| slim (adj) | thin in an attractive way 
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| slip (v) | to pass or put quickly or quietly 
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| slipper (n) | a small, flat shoe that we wear indoors and it is easy to put on and take off 
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| slurp (v) | to make loud noises with the mouth while eating or drinking 
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| smart (adj) | clever; intelligent 
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| smog (n) | air pollution, especially in cities, that is caused by a mixture of smoke, gases and chemicals 
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| smooth (adj) | not rough; even 
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| snail (n) | a small animal with a soft body and a round shell on its back 
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| snake (n) | a long, narrow reptile that has scales but no legs 
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| snap (v) | to cause to make a cracking noise 
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| snatch (v) | to take quickly or suddenly; grab 
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| sneeze (v) | to let out a sudden, involuntary burst of air through the mouth and nose 
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| sniff (v) | to take in short breaths of air through the nose that can be heard 
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| sociable (adj) | comfortable and pleasant in social situations 
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| social worker (n) | someone who is trained to help people who are poor, have family problems etc 
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| socialize (v) | to engage in social activities 
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| society (n) | a large group of people who live together in an organized way, making decisions about how to do things and sharing the work that needs to be done 
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| sofa (n) | a comfortable seat with a back and arms made for two or more people 
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| soft (adj) | quiet or low in tone 
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| software (n) | programs that you use to make a computer do different things 
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| soil (n) | the top layer of the earth's surface 
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| solar panel (n) | a panel of connected photovoltaic cells,using energy from the sun 
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| soldier (n) | a person who serves in the army and who is not an officer 
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| solid (adj) | sturdy; strong 
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| solution (n) | an answer to or explanation of a problem 
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| somewhat (adv) | in some measure or degree; rather 
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| songwriter (n) | one who composes the lyrics, the music, or both for songs 
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| sonnet (n) | a poem that has 14 lines and a particular pattern of rhyme 
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| soot (n) | a fine, black powder made during burning that collects in chimneys or is carried into the air in smoke 
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| sophisticated (adj) | having or showing a lot of knowledge or experience; not ignorant or simple 
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| soul (n) | the spiritual part of a person which some people believe continues to exist in some form after their body has died, or the part of a person which is not physical and experiences deep feelings and emotions 
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| sour (adj) | having a tart or acid taste like lemon juice or vinegar 
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| sour cream (n) | a thick cream that has been soured by lactic acid, similar to yoghurt 
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| source (n) | the place something comes from or starts at, or the cause of something 
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| southernmost (adj) | furthest towards the south of an area 
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| spake (v) | old form of past simple of the verb to speak 
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| sparkle (v) | to give off gas bubbles; bubble 
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| spear (n) | a weapon with a long wooden shaft and a sharp pointed tip 
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| specific (adj) | certain and exact; particular 
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| spectacle (n) | an unusual or splendid sight or public show 
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| spectacular (adj) | of or having to do with a spectacle; splendid 
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| spectator (n) | a person who attends and watches a public show such as a sports event 
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| speed (n) | the act of moving rapidly or swiftly 
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| spicy (adj) | made with or having strong spices 
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| spider (n) | any of various eight-legged invertebrates, that typically spin webs in which to nest and catch their prey 
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| spiky (adj) | covered with spikes or having that appearance; long and sharp-pointed 
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| spin (v) | to cause to turn around and around, especially fast 
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| spirit (n) | the meaning or intent of a thing 
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| splash (n) | to move in water so that drops of it go in all directions 
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| splash (v) | to move in water so that drops of it go in all directions 
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| sponsor (n) | a person who takes responsibility for someone or something 
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| sportscaster (n) | someone who describes a sports game as it is being broadcast on television 
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| spread (v) | to scatter or distribute 
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| spread over (v) | to cover, reach or have an effect on a wider or increasing area 
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| spring (n) | a flow of water from the earth 
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| sprinkle (v) | to drop or scatter in small bits 
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| squash (n) | a game played between two or four people on a special closed playing area which involves hitting a small rubber ball against a wall 
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| squeal (n) | a fairly long, loud, shrill sound or cry 
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| squeeze (v) | to press firmly together 
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| squint (v) | to partly close the eyelids 
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| squirm (v) | to twist the body about; wriggle 
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| squirt (v) | to wet with liquid shot out in a thin jet or spray 
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| stable (adj) | firmly fixed or not likely to move or change 
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| stage (n) | a raised platform used for concerts, plays, talks, and other performances 
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| stale (adj) | having lost its taste or moisture; not fresh 
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| stalk (n) | a plant's main stem 
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| stand tall (phr) | to act in a proud and confident way 
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| star (v) | to present in a main role in a film or play 
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| starter (n) | something that you eat as the first part of a meal 
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| state (n) | the condition of a person or thing 
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| state (v) | to say or write; express 
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| state of the art (n) | something that is cutting edge and makes use of the latest technology 
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| statue (n) | a piece of art that is made out of stone, metal, or other material 
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| steady (adj) | firmly fixed in position; stable 
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| steel (n) | a hard, strong metal made by mixing iron and another metal 
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| step (n) | the movement made by lifting one foot and putting it down in another place; motion used in walking 
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| steppe (n) | a broad, grass plain, especially the great plains in southeast Russia and southwest Asia 
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| steward (n) | an employee who looks after people on an aircraft, boat, or train 
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| stick (n) | a long, thin piece of wood that you use when you are walking, playing hockey, etc. 
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| stick (v) | to attach with tape, paste, glue, or other similar substance 
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| sticky (adj) | tending to stick to or hold on to something when touched 
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| stiff (adj) | not easy to bend 
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| still (adj) | not moving 
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| stimulate (v) | to bring about to activity or action 
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| stir (v) | to mix or move in a circle with a hand or object 
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| storage (n) | a place for storing goods 
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| storey (n) | one level of a building 
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| storm (n) | a violent disturbance in the atmosphere, that brings rain, snow, wind, thunder, or lightning 
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| straight (adj) | without a curve or bend 
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| straighten (v) | to make or become straight 
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| strap (n) | a thin, flat strip of material used to fasten or hold objects together or in position 
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| strategy (n) | a method or plan of action that you intend to use for some purpose 
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| stratosphere (n) | a layer of the earth's upper atmosphere 
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| straw (n) | the dried stalks of plants such as oats, wheat, or rye that remain after the grain is removed 
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| stream (n) | a moving line of liquid, gas, smoke, etc 
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| strength (n) | the state or condition of being strong 
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| strike (v) | to attack or make an attack upon 
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| striking (adj) | very unusual or easily noticed, and therefore attracting a lot of attention 
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| stringed (adj) | equipped or furnished with strings 
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| stroke (v) | to touch or brush gently with the hand or a brush 
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| structure (n) | a thing that is made up of different parts that are connected in a particular way 
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| struggle (n) | a hard fight in which people try to achieve something that somebody else does not want them to have 
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| study (n) | a branch of knowledge 
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| stun (v) | to shock or amaze 
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| sturdy (adj) | very strong and solid 
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| submarine (n) | a sea vessel that can travel under water 
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| substance (n) | that of which something is made; matter 
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| subtitle (n) | The words shown at the bottom of a film or television picture to explain what is being said in another language 
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| suffer (v) | to feel pain or to have a bad experience 
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| suffer from (v) | to experience physical or mental pain 
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| suffix (n) | a letter or group of letters added at the end of a word to make a new word 
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| suggestion (n) | expressing an idea or plan for someone to consider 
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| suitable (adj) | correct for the situation or purpose 
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| sum (n) | the number or amount that comes from adding two or more numbers 
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| summarize (v) | to describe briefly the main facts or ideas of something 
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| summertime (n) | the season of summer 
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| sunbathe (v) | to sit or lie outside in the sun, especially in order to become brown 
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| sunflower (n) | a tall plant with large, yellow flowers whose seeds in the centre of the flower can be eaten 
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| sunrise (n) | the time in the morning when the sun starts to rise in the sky 
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| sunscreen (n) | a cream or oil that you put into your skin to stop the sun from burning you 
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| superb (adj) | of the finest kind or quality 
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| superlative (n) | the form of an adjective or adverb that expresses the highest degree of comparison 
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| supply (v) | to provide 
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| support (v) | to provide enough for 
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| suppose (v) | to imagine or think of something as a possibility 
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| surface (n) | the outer or top part or layer of something 
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| surgeon (n) | a medical doctor who does surgery 
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| surrealism (n) | an artistic and literary movement of the twentieth century that uses dream imagery, and other unusual effects 
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| surroundings (n) | all the things around you; environment 
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| survey (n) | an examination of opinions, behaviour, etc., made by asking people questions 
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| survive (v) | to continue to live after something very dangerous has happened 
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| survivor (n) | a person who continues to live, despite nearly dying 
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| sushi (n) | a Japanese dish consisting of cold rice wrapped, especially in seaweed, around raw fish or vegetables 
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| Swahili (n) | an African language with some Arabic roots that is used in east Africa and parts of Zaire 
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| sweep (v) | to clear the floor of dirt or dust 
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| sweep away (v) | eliminate completely and without a trace 
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| sword (n) | a weapon which has a long pointed blade fixed on a handle and is used to cut or thrust 
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| symbolism (n) | the practice of expressing things, as in art or literature, by means of symbols 
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| symphony (n) | a musical piece for an orchestra that has three or four movements 
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| syntax (n) | the study of the way sentences are formed, and how the words go together 
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