equator

nouns

an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles

"the equator is the boundary between the northern and southern hemispheres"

equator

is derived from

is a type of (narrower)

a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center

a circle dividing a sphere or other surface into two usually equal and symmetrical parts

equator

is derived from

is derived from

is a type of (narrower)

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

"he calculated the circumference of the circle"