: having, assuming, or occurring in various forms, characters, or styles : polymorphic
a polymorphous rash
polymorphous sexuality
polymorphously adverb

Examples of polymorphous in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Flyboy in the Buttermilk, by the late, great Greg Tate—that posthumous Pulitzer Prize-winning polymorphous polymath, the heppest cat to ever done bee bop in the pages of the Village Voice and Vibe—is back in print. — Literary Hub, 17 Aug. 2026 Goddesses take pleasure in themselves, and a wonderful polymorphous sexuality underlies it all. — Jerry Saltz, Vulture, 8 Mar. 2024 The songs had accreted parts over decades, with material from Gabriel’s longtime band; from the polymorphous musician Brian Eno; from Swedish and South African choirs; from orchestral arrangements; and from Gabriel’s library of samples and sessions. — Jon Pareles, New York Times, 30 Nov. 2023 In the late 1970s Mueller traded on her midnight-movie stardom to become a leading light of New York’s downtown scene at the height of its polymorphous perversity. — Negar Azimi, The New York Review of Books, 30 Mar. 2023

Word History

Etymology

Greek polymorphos, from poly- + -morphos -morphous

First Known Use

1754, in the meaning defined above

Time Traveler
The first known use of polymorphous was in 1754

Cite this Entry

“Polymorphous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polymorphous. Accessed 5 Oct. 2026.

Medical Definition

polymorphous

adjective
: having, assuming, or occurring in various forms : polymorphic
polymorphous skin rashes
polymorphously adverb
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