English
antiantitoxin
From anti- + antitoxin.
Proto-Indo-European *h₂ent- ‘forehead’
Proto-Indo-European *h₂énts ‘forehead’
Proto-Indo-European *h₂énti ‘opposite’
Ancient Greek ᾰ̓ντῐ́ ‘over against, opposite’
English anti-
Today it means
noun Any substance, especially an antibody, that counters the effects of an antitoxin
Language periods are conventional ranges, not dates for this word.
Etymograph / antiantitoxin