An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Half of a sphere bounded by a great circle, especially one of the halves into which the earth or the celestial sphere is divided.

From L. hemisphærium, from Gk. hemisphairion, from hemi- "half," (from PIE base *semi-; cf. Skt. sami, L. semi-, O.H.G. sami- "half," and O.E. sam-) + sphaira, → sphere.

From nim-, → half + sepehr, koré, → sphere.

The half of the → Earth or another → astronomical object between the → north pole and the → equator.

→ northern; → hemisphere.

The half of the → Earth or another → north pole between the → south pole and the → equator.

→ southern; → hemisphere.