Definition - An alternate spelling of matronymic, a name derived from either: (a) your mother's name or (b) one of your maternal ancestors' names.

1. The practice of using metronymics is called metronymy.

Example -
The Icelandic name Ingridsdottir (Ingrid's daughter)

Etymology -
The word derives from the Greek metros, mother + onoma, name.

Oxford English Dictionary -
Its first citation is from 1868:
"In not a few instances a metronymic takes the place of the usual patronymic."
(Lightfoot Comm. Philippians (1873) 55)

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