equinox: Meaning and Definition of

e•qui•nox

Pronunciation: (ē'kwu-noks", ek'wu-), [key]
— n.
  1. the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21and September 22
  2. either of the equinoctial points.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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