Definitions

1. noun

Either half of a sphere or a global surface divided into two parts by an imaginary great circle.

“The Earth is divided into two hemispheres, the Eastern Hemisphere and the Western Hemisphere.”

2. noun

A half of something that is roughly spherical in shape, such as the northern or southern half of the Earth.

“The northern hemisphere has the most land mass of the Earth’s hemispheres.”

3. noun

A half of a celestial body, such as a planet or moon, that is roughly spherical in shape.

“The Moon has a northern hemisphere and a southern hemisphere.”

4. verb

To divide or be divided into two hemispheres.

“The Earth hemisphere is hemisphered by the equator.”