Englishfor English speakers
revolution
Noun
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A revolution is a sudden significant change.
The Industrial Revolution began when machines were able to make things quicker and cheaper than people.
In the 1960s, you had the women's revolution, the sexual revolution, and all sorts of change.
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A revolution is a war against the government by the country's own people.
There was a revolution in France in 1789.
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When a wheel turns around once it has made a revolution; going in a circle; turning; revolving.
The hour hand on the clock makes one revolution in twelve hours.
os
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noun
a mouth or mouthlike opening
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noun
(= bone)
rigid connective tissue that makes up the skeleton of vertebrates
Os
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noun
(= osmium)
a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
OS
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noun
(= oculus sinister)
the left eye
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noun
(= operating system)
(computer science) software that controls the execution of computer programs and may provide various services