The equator is defined as an imaginary line drawn on the Earth and spaced equally between the North and South Pole.(noun)
An example of the equator is the latitude of 0°.
See equator in Webster's New World College Dictionary
Origin: ME < ML < LL aequator, lit., one who makes equal: see equate
See equator in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Medieval Latin aequātor (diēī et noctis), equalizer (of day and night)
Origin: , from Latin aequāre, to equalize; see equate.
See equator in Ologies
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