trichomonad

1 of 2

noun

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

trichomonadal

2 of 2

adjective

trich·​o·​mona·​dal
¦trikə¦mänədᵊl
-¦mōn-
variants or trichomonal
¦trikə¦mänᵊl How to pronounce trichomonadal (audio)
-¦mōn-;
trə̇ˈkämənᵊl
: of, relating to, or caused by trichomonads
trichomonadal vaginitis

Word History

Etymology

Noun

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

Adjective

trichomonal from trichomonad + -al

First Known Use

Noun

1861, in the meaning defined above

Time Traveler
The first known use of trichomonad was in 1861

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Cite this Entry

“Trichomonad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trichomonad. Accessed 26 Jun. 2026.

Medical Definition

trichomonad

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

trichomonad

2 of 2 adjective

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