equator

Noun
  1. An imaginary line around the Earth forming the great circle that is equidistant from the north and south poles (synset 108586248)
    "the equator is the boundary between the northern and southern hemispheres"
    hypernym: great circle - a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
  2. A circle dividing a sphere or other surface into two usually equal and symmetrical parts (synset 113896712)
    hypernym: circle - ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point

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