Englishfor English speakers
orbital
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adjective
of or relating to an orbit
orbital revolution
orbital velocity
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adjective
of or relating to the eye socket
orbital scale
orbital arch
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.