[ih-kwey-ter] /ɪˈkweɪ tər/
the great circle on a sphere or heavenly body whose plane is perpendicular to the axis, equidistant everywhere from the two poles of the sphere or heavenly body.
the great circle of the earth that is equidistant from the North Pole and South Pole.
a circle separating a surface into two congruent parts.
the great circle of the earth with a latitude of 0°, lying equidistant from the poles; dividing the N and S hemispheres
a circle dividing a sphere or other surface into two equal symmetrical parts
See magnetic equator
(astronomy) See celestial equator
late 14c., from Medieval Latin aequator diei et noctis “equalizer of day and night” (when the sun is on the celestial equator, twice annually, day and night are of equal length), agent noun from Latin aequare “make equal” (see equate). Sense of “celestial equator” is earliest, extension to “terrestrial line midway between the poles” first recorded in English 1610s.
An imaginary circle around the Earth, equidistant from the North Pole and South Pole.
[ee-kwuh-tawr-ee-uh l, -tohr-, ek-wuh-] /ˌi kwəˈtɔr i əl, -ˈtoʊr-, ˌɛk wə-/ adjective 1. of, relating to, or near an , especially the of the earth. 2. of, like, or typical of the regions at the earth’s : equatorial temperatures. noun 3. a telescope mounting having two axes of motion, one parallel to the earth’s axis […]
- Equatorial coordinate system
equatorial coordinate system (ē’kwə-tôr’ē-əl, ěk’wə-) The coordinate system in which a celestial object’s position on the celestial sphere is described in terms of its declination and right ascension, measured with respect to the celestial equator. Declination and right ascension correspond directly to geographic latitude and longitude as projected outward onto the celestial sphere. Declination is […]
noun 1. an ocean current that flows E between the west-flowing equatorial currents.
noun 1. a republic in W equatorial Africa, comprising the mainland province of Río Muni and the island province of Bioko: formerly a Spanish colony. 10,824 sq. mi. (28,034 sq. km). Capital: Malabo. noun 1. a republic of W Africa, consisting of Río Muni on the mainland and the island of Bioko in the Gulf […]