matronymic
/ˌmætɹəˈnɪmɪk/
adj 2noun 2
Definitions
adj
1
Of, relating to, or derived from the given name of one's mother.
In many countries, matronymic surnames can be adopted after the death of the father, although the process is very formal and lengthy.
2
By extension; of, relating to, or derived from the given name of a female ancestor.
noun
1
A surname or byname acquired from the given name of one's mother.
2
By extension, a surname or byname acquired from the given name from a female ancestor.
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