Pronunciation: (ē"kwu-tôr'ē-ul, -tōr'-, ek"wu-), [key]
1. of, pertaining to, or near an equator, esp. the equator of the earth.
2. of, like, or typical of the regions at the earth's equator: equatorial temperatures.
a telescope mounting having two axes of motion, one parallel to the earth's axis and one at right angles to it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.