| perigeum | <astronomy> That point in the orbit of the moon which is nearest to the earth; opposed to apogee. It is sometimes, but rarely, used of the nearest points of other orbits, as of a comet, a planet, etc. Synonym: epigee, epigeum. Origin: NL. Perigeum, fr. Gr. About, near + the earth: cf. F. Perigee. Source: Websters Dictionary (01 Mar 1998) |
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