Equatorial Definition
ēkwə-tôrē-əl, ĕkwə-
adjective
Of or near the earth's equator.
Webster's New World
Of any equator.
Webster's New World
Like or characteristic of conditions near the earth's equator.
Equatorial heat.
Webster's New World
Designating or of a telescope mounted in such a way as to have two axes of motion, one (called polar axis) parallel to the earth's axis, the other (called declination axis) perpendicular to it: by rotation about the polar axis it can follow the apparent motion of a celestial body.
Webster's New World
Antonyms:
noun
An equatorial telescope.
Webster's New World
(astronomy) A kind of telescope mounted so as to have two axes of motion at right angles to each other, one of them parallel to the axis of the Earth, and each carrying a graduated circle, one for measuring declination, and the other right ascension, or the hour angle, so that the telescope may be directed, even in the daytime, to any star or other object whose right ascension and declination are known.
Wiktionary
Other Word Forms of Equatorial
Noun
Singular:
equatorial
Plural:
equatorials
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