Definition - An uncapitalized word that has been derived from a proper noun.

1. Eponyms are also formed from proper nouns, but they are often capitalized. For further info, see pojmanym.net

Example -

(1) ampere (named for André-Marie Ampère)
(2) calliope (named for the muse of epic poetry)
(3) macadam (named for John Loudon McAdam)

Etymology -
The word was coined by Jim and John Pojman in 1975, thus the word pojmanym is itself sort of a pojmanym.

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