English
homovanillic
From homo- (“extra methylene group”) + vanillic.
Formed from homo- ‘extra methylene group’ + vanillic
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 Relating to homovanillic acid or its derivatives
Language periods are conventional ranges, not dates for this word.
Etymograph / homovanillic