1 (of a name) derived from the name of its bearer's father or ancestor. In Western cultures, many surnames are patronymic in origin, as for example Irish names beginning with O' and English names ending with -son; in other cultures, such as Russian, a special patronymic name is used in addition to the surname
2 a patronymic name
(C17: via Late Latin from Greek patronumikos, from pater father + onoma name)
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