Definitions

1. noun

an imaginary line on the Earth’s surface that divides it into the Northern and Southern Hemispheres; it is an arc of about 40,075 kilometers long that runs around the middle of the Earth, dividing it into the Northern and Southern Hemispheres.

“The travelers crossed the equator on their journey to the South Pole.”

2. verb

to be or extend across the equator, especially in a geographical or astronomical sense.

“The trade winds equate the climate of the continent to that of the northern hemisphere.”