- a name, esp a place name, derived from the name of a real or mythical person, as for example Constantinople from Constantine I
- the name of the person from which such a name is derived
WordReference Random House Unabridged Dictionary of American English © 2026
ep•o•nym
(ep′ə nim),USA pronunciation n.
ep′o•nym′ic, adj.
eponym, +n.
- a person, real or imaginary, from whom something, as a tribe, nation, or place, takes or is said to take its name:Brut, the supposed grandson of Aeneas, is the eponym of the Britons.
- a word based on or derived from a person's name.
- Ancient Historyany ancient official whose name was used to designate his year of office.
- back formation from eponymous 1840–50
eponym, +n.
- a word based on or derived from a person's name.
Collins Concise English Dictionary © HarperCollins Publishers::
eponym /ˈɛpəˌnɪm/ n