Etymograph

English

hemiellipsoid

From hemi- + ellipsoid.

Formed from hemi- + ellipsoid

Proto-Indo-European *sem- ‘one, whole’

Proto-Indo-European *sēmi ‘half’

English hemi-

Today it means

noun Either of the halves into which an ellipsoid is divided by a plane of symmetry

Language periods are conventional ranges, not dates for this word.

Etymograph / hemiellipsoid