English
interhomolog
From inter- + homolog.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *sem- ‘together, one’
…
Proto-Hellenic *homós
Ancient Greek ὁμός ‘same, common, joint’
Ancient Greek ὁμόλογος ‘agreeing, of one mind’
French homologue
English homolog
Today it means
adj Between homologs
Language periods are conventional ranges, not dates for this word.
Etymograph / interhomolog