English

antichain

From anti- + chain.

A compound of anti- + chain

Proto-Indo-European *h₂ent- ‘forehead’

Proto-Indo-European *h₂énts ‘forehead’

Proto-Indo-European *h₂énti ‘opposite’

Ancient Greek ᾰ̓ντῐ́ ‘over against, opposite’

English anti-

Proto-Italic *katesnā

Latin catēna ‘chain’

Old French chaeine ‘chain’

Middle English cheyne ‘a chain’

English chain

Today it means

noun A subset, A, of a partially ordered set, (P, ≤), such that no two elements of A are comparable with respect to ≤.

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

Etymograph / antichain