equator

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Immediately under the equator is a wide area of heavy rainfall and dense forest.

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Definitions (14)

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  1. noun The imaginary great circle around the earth's surface, equidistant from the poles and perpendicular to the earth's axis of rotation. It divides the earth into the Northern Hemisphere and the Southern Hemisphere.
  2. noun A similar great circle drawn on the surface of a celestial body at right angles to the axis of rotation.
  3. noun The celestial equator.

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Examples (50)

  • According to Jim, the equator was a highly likely location for geothermal activity, due to rotational and tidal stresses on Brimstone's crust. —  Asimov's Science Fiction [2001.04]
  • Some 55 km above the Venusian surface, the temperature at the equator is a pleasant 29ºC (80ºF)—and the ambient pressure is about half a terrestrial atmosphere (Table 1). —  AnalogSFF,December2006
  • We know that the velocity of the surface of the earth is greatest at the equator, as at that place the circumference of the earth is about 25,000 miles, but the further we get away from the equator, and the nearer we get to the North and South poles, the velocity of the surface decreases, simply because the circumference of the earth decreases Or, to reverse the statement, the velocity of the surface of the earth is least at the poles, but increases the nearer we get to the equator. —  Aether and Gravitation
  • At this time o' the year Barbados is about on the thermal equator--half-way between the trades. —  "Where Angels Fear to Tread" and Other Stories of the Sea
  • At high noon on the equator, the temperature reached a sweltering 180° absolute; it became somewhat chillier toward the poles H_{2}O was, anywhere on the planet, a whitish, crystalline mineral suitable for building material. —  Unwise Child
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Middle English, from Medieval Latin aequātor (diēī et noctis), equalizer (of day and night), from Latin aequāre, to equalize; see equate.

Toggle Century etymologies Century Dictionary (1)

  1. from Middle English equator = French équateur = Portuguese equador = Spanish ecuador = Italian equatore = Dutch æquator = German äquator = Danish ækvator = Swedish eqvator, from Middle Latin æquator, the equator, from Latin æquare, make equal: see equate.
 

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/əˈkweɪtər/
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