Equator

Definition of Equator

E`qua´tor
n.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
(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.

Related Words

Antarctic Zone, Arctic Circle, Arctic Zone, Frigid Zones, Torrid Zone, Tropic of Cancer, Tropic of Capricorn, Variable Zones, anklet, aphelion, apogee, armlet, astronomical longitude, autumnal equinox, band, belt, bisector, boundary, bracelet, celestial equator, celestial longitude, celestial meridian, center, cincture, cingulum, circle, climate, clime, collar, collarband, colures, core, diameter, diaphragm, divider, earring, ecliptic, equinoctial, equinoctial circle, equinoctial colure, equinox, fascia, fillet, finger ring, furnace, galactic longitude, geocentric longitude, geodetic longitude, girdle, girt, girth, great circle, halfway mark, heart, heliocentric longitude, hell, hoop, horse latitudes, inferno, interior, kernel, latitude, line of demarcation, longitude, longitude in arc, mean, median, meridian, middle, midmost, midriff, midst, neckband, necklace, nose ring, nucleus, orbit, oven, parallel, partition, perigee, perihelion, period, prime meridian, quoit, ring, roaring forties, small circle, solstitial colure, steam bath, subtropics, the line, thick, thick of things, trajectory, tropic, tropics, vernal equinox, waist, waistline, wristband, wristlet, zodiac, zone
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Equally
Equalness
Equangular
Equanimity
Equanimous
Equant
Equate
equating
Equating for curves
Equating for grades
Equation
Equation box
Equation clock
Equation of a curve
Equation of condition
Equation of equinoxes
Equation of payments
Equation of the center
Equation of time
Equations of condition
-Equator-
Equator of the sun
Equatorial
Equatorial telescope
Equatorially
Equerry
Equery
Equestrian
Equestrianism
Equestrienne
Equi-
Equiangled
Equiangular
Equiangular spiral
Equibalance
Equicrescent
Equicrural
Equicrure
Equidifferent
Equidistance
Equidistant
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