Equator of a planet

Equator of a planet
Equator E*qua"tor, n. [L. aequator one who equalizes: cf. F. ['e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth's surface, everywhere equally distant from the two poles, and dividing the earth's surface into two hemispheres. [1913 Webster]

2. (Astron.) The great circle of the celestial sphere, coincident with the plane of the earth's equator; -- so called because when the sun is in it, the days and nights are of equal length; hence called also the {equinoctial}, and on maps, globes, etc., the {equinoctial line}. [1913 Webster]

{Equator of the sun} or {Equator of a planet} (Astron.), the great circle whose plane passes through through the center of the body, and is perpendicular to its axis of revolution.

{Magnetic equator}. See {Aclinic}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Equator — E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into two… …   The Collaborative International Dictionary of English

  • Equator of the sun — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …   The Collaborative International Dictionary of English

  • Equator (disambiguation) — Equator can refer to:* Equator, an imaginary circle drawn around a planet (or other astronomical object) at a distance halfway between the poles * Equator (BBC TV series), a 2007 documentary series based on a journey along the equator * Equator… …   Wikipedia

  • Magnetic equator — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …   The Collaborative International Dictionary of English

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  • Meanings of minor planet names: 12001–13000 — As minor planet discoveries are confirmed, they are given a permanent number by the IAU s Minor Planet Center, and the discoverers can then submit names for them, following the IAU s naming conventions. The list below concerns those minor planets …   Wikipedia

  • (the) equator — the equator UK US noun [singular] an imaginary line that goes round the Earth and divides it into the northern and southern hemispheres Thesaurus: imaginary lines around the earthhyponym planet earthsynonym Variant …   Useful english dictionary

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