trich·​o·​mo·​nas ˌtri-kə-ˈmō-nəs How to pronounce trichomonas (audio)

Word History


New Latin

First Known Use

1917, in the meaning defined above

Time Traveler
The first known use of trichomonas was in 1917

Dictionary Entries Near trichomonas

Cite this Entry

“Trichomonas.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

Medical Definition


trich·​o·​mo·​nas ˌtrik-ə-ˈmō-nəs How to pronounce trichomonas (audio)
capitalized : a genus (the type of the family Trichomonadidae) of polymastigote parasitic flagellated protozoans that have four anterior flagella and another at the margin of an undulating membrane or in some classifications also include forms with three or five anterior flagella and that are parasites of the digestive or genitourinary tracts of numerous vertebrate and invertebrate hosts including one (T. vaginalis) causing human vaginitis
: a protozoan of the genus Trichomonas
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