English

identicon

Blend of identity + icon.

Latin idem ‘the same’

Late Latin idemptitās

Middle French identité

Middle English ydemptite

Ancient Greek εἰκών ‘likeness, image, portrait’

Latin īcōn ‘image, artistic representation of a thing’

English icon

Today it means

noun A graphical symbol, usually automatically generated, representing some entity for easy visual identification.

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

Etymograph / identicon