(astronomy, astrology) Half of the celestial sphere, as divided by either the ecliptic or the celestial equator . / (figuratively) A realm or domain of activity .

plural of hemisphere

Having the shape of half a sphere. / Pertaining to or operating throughout a hemisphere of the Earth.

Pertaining to or operating throughout a hemisphere. / (uncommon) Having the shape of half a sphere.

In the way of a hemisphere.

hemispheric

The state if being hemispherical

Misspelling of hemisphericity.

The hemisphere of the Earth to the west of the Greenwich Meridian (zero degree longitude) and east of 180 degrees longitude (approximately the International Date Line). / (metonymically) The Americas.

The hemisphere of the Earth to the east of the Greenwich Meridian (zero degree longitude) and west of 180 degrees longitude (approximately the International Date Line).