equator

Words with a similar base: equator

'equator'

[equator.n.01] as in: an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles

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Examples:
the equator is the boundary between the northern and southern hemispheres

'equator'

[equator.n.02] as in: a circle dividing a sphere or other surface into two usually equal and symmetrical parts