Meaning of patronymic

pat•ro•nym•ic

Pronunciation: (pa"tru-nim'ik), [key]
—n.
  1. a patronymic name, as Williamson (son of William) or Macdonald (son of Donald).
  2. a family name; surname.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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