English

hemicycle

From hemi- + cycle.

A compound of hemi- + cycle

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

Proto-Indo-European *sēmi ‘half’

English hemi-

Proto-Indo-European *kʷel- ‘to turn’

…

Proto-Hellenic *kúklos ‘circle, wheel’

Ancient Greek κύκλος ‘circle, ring’

Late Latin cyclus

Middle English cicle ‘fixed length period of years’

English cycle

Today it means

noun A semicircle.

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

Etymograph / hemicycle