hemisphere Meaning, Definition & Usage

  1. noun half of the terrestrial globe
  2. noun half of a sphere
  3. noun either half of the cerebrum
    cerebral hemisphere.

WordNet

Hem"i*sphere noun
Etymology
L. hemisphaerium, Gr. half = sphere: cf. F. hémisphère. See Hemi-, and Sphere.
Definitions
  1. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center.
  2. Half of the terrestrial globe, or a projection of the same in a map or picture.
  3. The people who inhabit a hemisphere.
    He died . . . mourned by a hemisphere. J. P. Peters.
    ten

Webster 1913