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Όρος
Ορισμός
align (verb) to place or arrange in a straight line, ευθυγραμμίζω
Example
Align the ruler and the middle of the paper and then cut it straight.
Synonym
line up
Word Family
alignment
appliance (noun) a device used for a particular purpose, συσκευή
Example
This store sells both large and small kitchen appliances.
atomic (adjective) having to do with atoms or energy made from atoms, ατομικός
Example
Atomic energy is efficient but expensive.
backwards (adverb) towards the direction which is opposite to the one in which you are facing, προς τα πίσω
Example
I pulled the swing backward and then let it go.
Synonym
back
Antonym
forwards
cell (noun) the smallest living part of an animal or a plant, κύτταρο
Example
Brain cells have a very complex structure.
circumstance (noun) a condition or fact connected with an event or situation, περίσταση
Example
Bad weather was a circumstance we didn't think about when planning the picnic.
Synonym
condition, incident, thing
combine (verb) to join together into a whole, συνδέω
Example
He combined dirt and water to make mud.
Synonym
blend, join, mix
Antonym
isolate, separate
Word Family
combination
common (adjective) easily found; happening often, συνηθισμένος
Example
Pigeons are common in our part of the country.
Synonym
ordinary, simple, usual
Antonym
rare, unusual
compass (noun) an instrument for showing direction, πυξίδα
Example
Sailors relied on a compass to find their way across the ocean.
consist (verb) to be made up or formed, αποτελούμαι
Example
This cake consists mainly of sugar, flour, and butter.
crystal (noun) a clear kind of rock that has a regular shape, κρύσταλλος
Example
Diamonds are crystals.
develop (verb) to bring into being or operation, αναπτύσσω
Example
Scientists are developing a new kind of plastic.
Synonym
create, generate
Word Family
development
effect (noun) something produced by a cause, αποτέλεσμα
Example
The effect of the snow storm was that all airports were closed.
Synonym
consequence, result
Antonym
cause
emigrate (verb) to leave one country or region in order to settle in another, μεταναστεύω
Example
Her parents emigrated from Germany to escape from the Nazis.
Word Family
emigration emigrant
gas (noun) a form of matter that is neither liquid nor solid, αέριο
Example
A leak in the gas pipes caused a major explosion.
guide (verb) to direct or lead along a way that is not familiar, οδηγώ
Example
The librarian guided us to the books about Asian snakes.
Synonym
direct, show
Word Family
guidance
headline (noun) the title to a newspaper article that tells what the article is about, κεφαλίδα, τίτλος
Example
That king's wedding was in the headlines all over the world.
household (noun) a group of people who live together, νοικοκυριό
Example
Most households have a dish-washer.
Synonym
family
imply (verb) to suggest without saying directly, υποννοώ
Example
When she said that the car was dirty, she was implying that I should clean it.
Synonym
hint, suggest
Antonym
state
Word Family
implication
improve (verb) to make better, βελτιώνω
Example
Salt and pepper improved the sauce.
Synonym
better, enrich
Antonym
spoil
Word Family
improvement
instinct (noun) the cause of natural behaviour that is not learned in any species, ένστικτο
Example
His instinct told him to stay inside the house and wait for help.
Word Family
instictive
interval (noun) the period of time between two events or situations, μεσοδιάστημα
Example
There will be a five minute interval between the presentation and the open discussion.
invent (verb) to think of, come up with, or create something new, εφευρίσκω
Example
The man who invented the steam engine must have been very intelligent.
Synonym
conceive, create
Word Family
invention inventor
iron (noun) a heavy grey metal that is one of the chemical elements, σίδηρος
Example
Iron is used to make steel.
leak (verb) to allow something to pass through an opening or crack in a way that was not intended, διαρρέω
Example
We keep a bucket on the floor to catch drops of water because the ceiling leaks.
Word Family
leakage
light bulb (noun) a glass object containing a wire that produces light from electricity, γλόμπος
Example
The light bulb in my bedroom has stopped working - it is so dark!
magnet (noun) an object, esp. a piece of iron, that is able to attract iron and steel objects toward itself, μαγνήτης
Example
Magnets are used to attach the cars of toy trains to the engine.
Word Family
magnetic, magnetism
magnetic field (noun) the space around a magnet in which a magnetic force is active, μαγνητικό πεδίο
Example
Scientists do not agree on how magnetic fields can influence our world.
measure (verb) to find the exact size of something, using a ruler, scale, or the like, μετρώ
Example
She measured the rug to make sure it would fit in the hallway.
Synonym
calculate
Word Family
measurement
migrate (verb) to move from one region into another, ξενιτεύομαι
Example
Their grandparents migrated from Ohio to Florida.
Word Family
migration migrating
myth (noun) a story or group of stories that form part of the traditional knowledge of a society, μύθος
Example
An old Egyptian myth tells why the Nile River floods every year.
natural disaster (noun) a disaster that is caused by natural forces and not by a human, φυσική καταστροφή
Example
The earthquake was one of the worst natural disasters which has ever struck the area .
navigation (noun) the act of setting a course for or controlling a ship or aircraft, πλοήγηση
Example
Navigation is difficult in bad weather.
Word Family
navigate, navigator
Navy (noun) ships and soldiers used for fighting wars at sea, Ναυτικό
Example
My grandfather served in the Navy during World War Two.
nickname (noun) a name given to a person, place, or thing in place of the real name, παρατσούκλι
Example
New York City's nickname is "The Big Apple."
operate (verb) to work or run, λειτουργώ
Example
This new sewing machine operates for several hours on batteries.
Synonym
function, run, work
Word Family
operator, operation, operational
oxide (noun) a compound that includes oxygen, οξείδιο
Example
Carbon dioxide is an oxide.
patent (noun) the official legal right to make or sell an invention for a particular number of years, πατέντα
Example
He got a patent for the toy he designed.
positive (adjective) saying or meaning yes, θετικός
Example
My mother gave a positive answer when we asked for some money.
Synonym
affirmative
Antonym
negative
prove (verb) to show to be true or correct, αποδεικνύω
Example
The evidence failed to prove the guilt of the prisoner.
Synonym
confirm, establish
Word Family
proof
rarely (adverb) not often, σπάνια
Example
She rarely goes shopping for new clothes.
Synonym
seldom
record (verb) to put in writing, καταγράφω
Example
The nurse recorded my height and weight in my health chart.
Synonym
note, put down
Word Family
recorded 
reflect (verb) send light back and not absorb it, αντανακλώ
Example
The ocean reflected the setting sun.
Synonym
mirror
Word Family
reflection, reflecting
regard (verb) to consider or have an opinion about something or someone, θεωρώ
Example
I regard her as one of my best friends.
Synonym
consider
regularly (adverb) often, συχνά
Example
Accidents occur regularly on this road.
Synonym
frequently
Word Family
regular
revolve (verb) to move in a circle around a fixed point, περιστρέφομαι
Example
The Earth revolves around the Sun.
Synonym
rotate, spin
Word Family
revolving
script (noun) the written text of a play, movie, or television show, σενάριο
Example
He wrote a number of film scripts.
sense (noun) a particular ability to understand or judge, αίσθηση
Example
She had no sense of what was needed to make kids happy.
Synonym
perception
separate (verb) to divide into parts or break the connection between, ξεχωρίζω
Example
Separate the eggs and save the egg whites for later.
Synonym
disconnect
Antonym
combine, join, link
Word Family
separately 
shake (verb) to cause to tremble, τρέμω, κουνώ
Example
The ground shook from the earthquake.
Synonym
rock, vibrate
slavery (noun) the owning of people by other people, δουλεία
Example
After the Civil War many black people were freed from slavery.
Synonym
control
Antonym
freedom, liberty
Word Family
slave
typical (adjective) having all the qualities you expect a particular person, object, place, etc to have, χαρακτηριστικός
Example
A typical baby walks at about one year old.
Synonym
classic, representative
Antonym
abnormal
Word Family
typically 
weak (adjective) not strong in force, αδύναμος
Example
Her weak voice could not be heard in the back rows.
Synonym
faint
Antonym
strong
Word Family
weaken, weakness