Dictionary > English Dictionary > Definition, synonym and antonym of equator
Meaning of equator by Wiktionary Dictionary


    Alternative forms

    • æquator ( archaic )
    • equatour ( obsolete, rare )


    From Late Latin ( circulus ) aequator ( diei et noctis ) .


    • ( RP )1 IPA: /iːˈkweitɔː/
    • ( RP )2 IPA: /ɛˈkweitɔː/
    • Rhymes: -eɪtə( r )


    equator ( plural: equators )

    1. ( often “the Equator” ) An imaginary great circle around the Earth, equidistant from the two poles, and dividing earth's surface into the northern and southern hemisphere .
    2. A similar great circle on any sphere, especially on a celestial body, or on other reasonably symmetrical three-dimensional body .
    3. A short form of the celestial equator .

    Related terms


    • quorate

Explanation of equator by Wordnet Dictionary


    1. an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles

    2. the equator is the boundary between the northern and southern hemispheres
    3. a circle dividing a sphere or other surface into two usually equal and symmetrical parts

    Definition of equator by GCIDE Dictionary


    1. Equator n. [L. aequator one who equalizes: cf. F. équateur 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.

      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.

      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.