English

hemisegment

From hemi- + segment.

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

Proto-Indo-European *sēmi ‘half’

English hemi-

Proto-Indo-European *sek- ‘to cut’

Proto-Italic *sekaō ‘to cut’

Latin secō ‘to cut’

Latin segmentum ‘a piece cut off, a strip, segment of the…’

Today it means

noun half of a segment

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

Etymograph / hemisegment