Pronunciation: (per'i-jē"), [key]
n. Astron.
the point in the orbit of a heavenly body, esp. the moon, or of an artificial satellite at which it is nearest to the earth. See diag. under apogee.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

perigean tideperiglacial
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