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equator

Line breaks: equa|tor
Pronunciation: /ɪˈkweɪtə
 
/

Definition of equator in English:

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°.
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.
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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