English

hemiretina

From hemi- + retina.

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

Proto-Indo-European *sēmi ‘half’

English hemi-

Medieval Latin rētīna

Middle English rethina

Today it means

noun Either half of a retina (either the nasal or the temporal hemiretinas)

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

Etymograph / hemiretina