Learn how to say Eponymy correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word eponym:
a person after whom a discovery, invention, place, etc., is named or thought to be named.
a name or noun formed after a person.
mid 19th century: from Greek epōnumos ‘given as a name, giving one’s name to someone or something’, from epi ‘upon’ + onoma ‘name’