'eponymic' originates from Greek, specifically the word 'epōnumos', where 'epi-' meant 'upon' and 'onoma' meant 'name'.

'eponymic' changed from Greek 'epōnumos' to Late Latin/Medieval Latin 'eponymus' and Old French 'éponyme', and eventually became the modern English word 'eponymic'.

Initially it meant 'giving a name' or 'bearing a name', but over time it evolved into its current meaning of 'relating to an eponym' or 'named after a person'.