Etymograph

English

irreflexive

From ir- + reflexive.

A compound of ir- + reflexive

Latin reflexus ‘turned back or away, reflected’

Medieval Latin reflexīvus

English reflexive

Today it means

adj Of a binary relation R on X: such that no element of X is R-related to itself.

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

Etymograph / irreflexive