English

hemiprism

From hemi- + prism.

Formed from hemi- + prism

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

Proto-Indo-European *sēmi ‘half’

English hemi-

Proto-Indo-European *per-

Ancient Greek πρῐ́ω

Ancient Greek πρίσμᾰ ‘anything sawn’

Late Latin prisma ‘(geometry) prism’

English prism

Today it means

noun A half-prism.

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

Etymograph / hemiprism