HEMISPHERES
Noun
hemispheres
plural of hemisphere
Source: Wiktionary
HEMISPHERE
Hem"i*sphere, n. Etym: [L. hemisphaerium, Gr. hémisphère. See Hemi-,
and Sphere.]
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 Cerebral hemispheres. (Anat.) See Brain.
– Magdeburg hemispheres (Physics), two hemispherical cups forming,
when placed together, a cavity from which the air can be withdrawn by
an air pump; -- used to illustrate the pressure of the air. So called
because invented by Otto von Guericke at Magdeburg.
Source: Webster’s Unabridged Dictionary 1913 Edition