Definition of equator

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Equator (n.) 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..

Lern More About Equator

Amplitude :: Amplitude (n.) The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator..
Obliquity :: Obliquity (n.) The condition of being oblique; deviation from a right line; deviation from parallelism or perpendicularity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator..
Antoecians :: Antoecians (n. pl) Those who live under the same meridian, but on opposite parallels of latitude, north and south of the equator..
Colure :: Colure (n.) One of two great circles intersecting at right angles in the poles of the equator. One of them passes through the equinoctial points, and hence is denominated the equinoctial colure; the other intersects the equator at the distance of 90ยก from the former, and is called the solstitial colure..
Astrolabe :: Astrolabe (n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere..
Orion :: Orion (n.) A large and bright constellation on the equator, between the stars Aldebaran and Sirius. It contains a remarkable nebula visible to the naked eye..
Antiscii :: Antiscii (n. pl.) The inhabitants of the earth, living on different sides of the equator, whose shadows at noon are cast in opposite directions..
Delphinus :: Delphinus (n.) The Dolphin, a constellation near the equator and east of Aquila..
Southing :: Southing (n.) Distance of any heavenly body south of the equator; south declination; south latitude.
Doldrums :: Doldrums (n. pl.) A part of the ocean near the equator, abounding in calms, squalls, and light, baffling winds, which sometimes prevent all progress for weeks; -- so called by sailors..
Metre :: Metre (n.) A measure of length, equal to 39.37 English inches, the standard of linear measure in the metric system of weights and measures. It was intended to be, and is very nearly, the ten millionth part of the distance from the equator to the north pole, as ascertained by actual measurement of an arc of a meridian. See Metric system, under Metric..
Tropic :: Tropic (n.) One of the two small circles of the celestial sphere, situated on each side of the equator, at a distance of 23? 28/, and parallel to it, which the sun just reaches at its greatest declination north or south, and from which it turns again toward the equator, the northern circle being called the Tropic of Cancer, and the southern the Tropic of Capricorn, from the names of the two signs at which they touch the ecliptic..
Equator :: Equator (n.) 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..
Declination :: Declination (n.) The angular distance of any object from the celestial equator, either northward or southward..
Northing :: Northing (n.) The distance of any heavenly body from the equator northward; north declination.
Equator :: Equator (n.) 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..
Latitude :: Latitude (n.) Distance north or south of the equator, measured on a meridian..
Ellipticity :: Ellipticity (n.) Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is /..
Climate :: Climate (v. i.) One of thirty regions or zones, parallel to the equator, into which the surface of the earth from the equator to the pole was divided, according to the successive increase of the length of the midsummer day..
Sextans :: Sextans (n.) A constellation on the equator south of Leo; the Sextant.
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