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noun Perigeum, Perigee n. (Astron.) That point, in the orbit of the moon or other body orbiting the earth, which is nearest to the earth; opposed to apogee. It is sometimes, but rarely, used of the nearest points of bodies not orbiting the earth, such as of a comet, a planet, etc. Called also epigee, epigeum.
Collaborative International Dictionary of English 0.48
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