MATRONYMIC
matronymic, metronymic
(noun) a name derived from the name of your mother or a maternal ancestor
Source: WordNet® 3.1
Etymology
Adjective
matronymic (not comparable)
Of, relating to, or derived from the given name of one's mother.
By extension; of, relating to, or derived from the given name of a female ancestor.
Synonyms
• (from the given name of a mother): metronymic
Noun
matronymic (plural matronymics)
A surname or byname acquired from the given name of one's mother.
By extension, a surname or byname acquired from the given name from a female ancestor.
Synonyms
• (surname from a mother): matronym, metronym, metronymic
Coordinate terms
• patronym
• patronymic
Source: Wiktionary
Mat`ro*nym"ic, n. Etym: [L. mater mother + -nymic, as in patronimic.]
Definition: See Metronymic.
Source: Webster’s Unabridged Dictionary 1913 Edition