Definition of the equator
- The city of Quito, Ecuador, lies very close to the equator.
: the great circle of the celestial sphere whose plane is perpendicular to the axis of the earth
: a great circle of the earth or a celestial body that is everywhere equally distant from the two poles and divides the surface into the northern and southern hemispheres
: a circle or circular band dividing the surface of a body into two usually equal and symmetrical parts
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