trichomoniasis
noun
tricho·mo·ni·a·sis
ˌtri-kə-mə-ˈnī-ə-səs 
plural trichomoniases
ˌtri-kə-mə-ˈnī-ə-ˌsēz
: infection with or disease caused by trichomonads: such as
a
: a human sexually transmitted disease occurring especially as vaginitis with a persistent discharge and caused by a trichomonad (Trichomonas vaginalis) that may also invade the male urethra and bladder
b
: a venereal disease of domestic cattle marked by abortion and sterility
c
: one or more diseases of various birds resembling blackhead
Examples of trichomoniasis in a Sentence
Recent Examples on the Web
McMahon showed me a pigeon that was being treated for trichomoniasis, a microscopic parasite that can get in the throat and essentially suffocates the bird.
—
Ian Frazier, New Yorker, 5 May 2025
The at-home kit, according to the FDA, is the first of its kind to test for chlamydia, gonorrhea and trichomoniasis, three of the most common STIs with symptoms that often go unnoticed.
—Mary Walrath-Holdridge, USA Today, 28 Mar. 2025
The Food and Drug Administration recently authorized the first diagnostic test for chlamydia, gonorrhea and trichomoniasis that will be available without a prescription and can be performed entirely at home.
—Catherine Pearson, New York Times, 8 Apr. 2025
In 2021, the CDC reported that around 2.6 million Americans had been infected with trichomoniasis.
—Mary Walrath-Holdridge, USA Today, 28 Mar. 2025
This typically checks for a bunch of heavy hitters at once, Dr. Ross says, including, yes, BV and yeast, but also trichomoniasis, chlamydia, and gonorrhea.
—Erica Sloan, SELF, 27 Feb. 2025
Bacterial vaginosis, trichomoniasis, and other bacterial infections are treated with antibiotics; your provider will choose a pregnancy-safe antibiotic.
—Wendy Wisner, Health, 27 Dec. 2024
Untreated trichomoniasis can increase the risk of preterm birth and low birth weight.
—Wendy Wisner, Health, 31 Oct. 2024
Yes, STIs like trichomoniasis, chlamydia, and gonorrhea may cause yellow discharge.
—Wendy Wisner, Health, 29 Sep. 2024
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Ian Frazier, New Yorker, 5 May 2025
The at-home kit, according to the FDA, is the first of its kind to test for chlamydia, gonorrhea and trichomoniasis, three of the most common STIs with symptoms that often go unnoticed.
—Mary Walrath-Holdridge, USA Today, 28 Mar. 2025
The Food and Drug Administration recently authorized the first diagnostic test for chlamydia, gonorrhea and trichomoniasis that will be available without a prescription and can be performed entirely at home.
—Catherine Pearson, New York Times, 8 Apr. 2025
In 2021, the CDC reported that around 2.6 million Americans had been infected with trichomoniasis.
—Mary Walrath-Holdridge, USA Today, 28 Mar. 2025
This typically checks for a bunch of heavy hitters at once, Dr. Ross says, including, yes, BV and yeast, but also trichomoniasis, chlamydia, and gonorrhea.
—Erica Sloan, SELF, 27 Feb. 2025
Bacterial vaginosis, trichomoniasis, and other bacterial infections are treated with antibiotics; your provider will choose a pregnancy-safe antibiotic.
—Wendy Wisner, Health, 27 Dec. 2024
Untreated trichomoniasis can increase the risk of preterm birth and low birth weight.
—Wendy Wisner, Health, 31 Oct. 2024
Yes, STIs like trichomoniasis, chlamydia, and gonorrhea may cause yellow discharge.
—Wendy Wisner, Health, 29 Sep. 2024
Cite this Entry
“Trichomoniasis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trichomoniasis. Accessed 21 May. 2025.
Copy CitationKids Definition
trichomoniasis
noun
tricho·mo·ni·a·sis
ˌtrik-ə-mə-ˈnī-ə-səs
plural trichomoniases
-ˌsēz
: an infection of the vagina by a protozoan parasite that is marked by itching and a frothy discharge having a bad odor and that also occurs in the male urethra
Medical Definition
trichomoniasis
noun
tricho·mo·ni·a·sis
ˌtrik-ə-mə-ˈnī-ə-səs
plural trichomoniases
-ˌsēz
: infection with or disease caused by trichomonads: as
a
: a human sexually transmitted disease occurring especially as vaginitis with a persistent discharge and caused by a trichomonad (Trichomonas vaginalis) that may also invade the male urethra and bladder
b
: a venereal disease of domestic cattle caused by a trichomonad (T. foetus) and marked by abortion and sterility
c
: one or more diseases of various birds caused by trichomonads (especially T. gallinae) and resembling blackhead
called also roup
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