English
homozygous
From homo- + -zygous.
A compound of homo- + -zygous
Proto-Indo-European *sem- ‘one, whole’
Proto-Indo-European *somHós ‘same, alike’
Proto-Hellenic *homós
Ancient Greek ὁμός ‘same’
English homo-
Today it means
adj Of an organism in which both copies of a given gene have the same allele
Language periods are conventional ranges, not dates for this word.
Etymograph / homozygous