English

hemimacula

From hemi- + macula.

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

Proto-Indo-European *sēmi ‘half’

English hemi-

Proto-Indo-European *smeH- ‘to wipe’

Proto-Indo-European *sm̥Htlóm

Proto-Italic *smaklom

Latin macula ‘spot, stain’

Middle English macula ‘spot on the skin or in the eye’

Today it means

noun Either half of a macula

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

Etymograph / hemimacula