Hemisphere | Description, Types, Facts | Britannica hemisphere, in geometry and geography, half of a sphere Although any spherical body can be divided into an infinite number of hemispheres, geographers often divide Earth’s surface into four hemispheres that are separated by two great circle routes—that is, lines that represent the shortest distances that can be drawn between two points on the surface of a sphere—one coinciding with 0
HEMISPHERE Definition Meaning - Merriam-Webster The meaning of HEMISPHERE is a half of the celestial sphere as divided into two halves by the horizon, the celestial equator, or the ecliptic How to use hemisphere in a sentence Did you know?