Origins of terms
The usual noun and adjective in English is patronymic, but as a noun this exists in free variation alongside patronym. (The Oxford English Dictionary records the corresponding metronymic and metronym, alongside matronymic but not, however, matronym.) The first part of the word patronym comes from Greek πατήρ patēr "father" (GEN πατρός patros whence the combining form πατρο- patro-); the second part comes from Greek ὄνυμα onyma, a variant form of ὄνομα onoma "name". In the form patronymic, this stands with the addition of the suffix -ικός (-ikos), which was originally used to form adjectives with the sense ‘pertaining to’ (thus 'pertaining to the father's name'). These forms are attested in Hellenistic Greek as πατρώνυμος (patrōnymos) and πατρωνυμικός (patrōnymikos). The form patronym, first attested in English in 1834, was borrowed into English from French patronyme, which had previously borrowed the word directly from Greek. Patronymic, first attested in English in 1612, has a more complex history. Both Greek words had entered Latin, and, from Latin, French. The English form patronymic was borrowed through the mutual influence of French and Latin on English.