hemisphere
hemi.sphere or hemi.sphe.ri.cal \'hem-*-.sfi(*)r\ \.hem-*-'sfi(*)r-ik,
-'sfer-\ \-i-k*l\ n [ME hemisphere, fr. L hemisphaerium, fr. Gk
he-misphairion], fr. he-mi- + sphairion, dim. of sphaira sphere 1a: a half
of the celestial sphere divided into two halves by the horizon, the
celestial equator, or the ecliptic 1b: the northern or southern half of the
earth divided by the equator or th e eastern or western half divided by a
meridian 1c: the inhabitants of a terrestrial hemisphere 2: REALM,
PROVINCE 3: one of two half spheres formed by a plane through the sphere's
center 4: a map or projection of a celestial or terrestrial hemisphere 5:
CEREBRAL HEMISPHERE - hemi.sphe.ri.c aj