tricho·​mo·​nad ˌtri-kə-ˈmō-ˌnad How to pronounce trichomonad (audio)
: any of a genus (Trichomonas) of flagellated protozoans parasitic in many animals
trichomonad adjective
or trichomonal

Word History


New Latin Trichomonad-, Trichomonas, from trich- + Late Latin monad-, monas monad

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of trichomonad was in 1861

Dictionary Entries Near trichomonad

Cite this Entry

“Trichomonad.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2023.

Medical Definition


1 of 2 noun
tricho·​mo·​nad ˌtrik-ə-ˈmō-ˌnad, -nəd How to pronounce trichomonad (audio)
: any protozoan of the genus Trichomonas


2 of 2 adjective

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