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equatorial

[ee-kwuh-tawr-ee-uh l, -tohr-, ek-wuh-] /ˌi kwəˈtɔr i əl, -ˈtoʊr-, ˌɛk wə-/
adjective
1.
of, pertaining to, or near an equator, especially the equator of the earth.
2.
of, like, or typical of the regions at the earth's equator:
equatorial temperatures.
noun
3.
a telescope mounting having two axes of motion, one parallel to the earth's axis and one at right angles to it.
4.
a telescope with such a mounting.
Origin
1655-1665
1655-65; equator + -ial
Related forms
equatorially, adverb
nonequatorial, adjective
nonequatorially, adverb
transequatorial, adjective
transequatorially, adverb
unequatorial, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for equatorially

equatorial

/ˌɛkwəˈtɔːrɪəl/
adjective
1.
of, like, or existing at or near the equator
2.
(astronautics) (of a telescope) mounted on the perpendicular axes, one of which is parallel to the earth's axis an equatorial orbit
3.
(astronomy) of or referring to the celestial equator equatorial coordinates
noun
4.
an equatorial mounting for a telescope
Derived Forms
equatorially, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for equatorially
equatorial
1713, from equator + -al.
Online Etymology Dictionary, © 2010 Douglas Harper
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