Definitions:

1. Half of the terrestial globe. NOUN
   • The Northern Hemisphere experiences winter while the Southern Hemisphere enjoys summer.
2. One half of a sphere or spherical object. NOUN
   • The bush had been pruned into a perfect hemisphere.
3. Refers tp the two halves of the human brain. NOUN
   • The two brain hemispheres work together to enable complex thought processes.

Synonyms:

• bisection
• cerebral hemisphere
• half
• half-sphere