- The equator is defined as an imaginary line drawn on the Earth and spaced equally between the North and South Pole.
An example of the equator is the latitude of 0°.
A line marks the Earth's equator.
- an imaginary circle around the earth, equally distant at all points from both the North and South Poles: it divides the earth's surface into the Northern and Southern Hemispheres
- a circle like this around any celestial body
- any circle that divides a sphere or other body into two equal and symmetrical parts
- celestial equator
Origin of equatorMiddle English ; from Medieval Latin ; from Late Latin aequator, literally , one who makes equal: see equate
- a. 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.b. A similar great circle drawn on the surface of a celestial body at right angles to the axis of rotation.
- The celestial equator.
- A circle that divides a sphere or other surface into congruent parts.
Origin of equatorMiddle English, from Medieval Latin aequātor (diēī et noctis), equalizer (of day and night), from Latin aequāre, to equalize; see equate.
- (often “the Equator”) An imaginary great circle around the Earth, equidistant from the two poles, and dividing earth's surface into the northern and southern hemisphere.
- A similar great circle on any sphere, especially on a celestial body, or on other reasonably symmetrical three-dimensional body.
- A short form of the celestial equator.
From Late Latin (circulus) aequator (diei et noctis).
- The Earth’s equator.