Definition of equator in English:

equator

Line breaks: equa|tor
Pronunciation: /ɪˈkweɪtə
 
/

noun

  • 1A line notionally drawn on the earth equidistant from the poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.
    More example sentences
    • UV intensity falls as one moves from the equator toward Earth's poles, increasing latitude.
    • As of 1791, the meter was defined as one ten-millionth the distance from the North Pole to the equator along the line of longitude that passes through Paris.
    • This influx of fresh water causes the Gulf Stream, the ocean current that carries warm water from the equator into the northern hemisphere, to stop.
  • 1.1 Astronomy short for celestial equator.
    More example sentences
    • The numbers that you see along the equator line represent celestial longitude, that is, hours of right ascension.

Origin

late Middle English: from medieval Latin aequator, in the phrase circulus aequator diei et noctis 'circle equalizing day and night', from Latin aequare 'make equal' (see equate).

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