- a sexually transmitted disease typically asymptomatic in men and resulting in vaginitis with a copious, frothy discharge and itching in women, caused by a trichomonad Trichomonas vaginalis.
- any of various other diseases caused by a trichomonad.
- inflammation of the vagina characterized by a frothy discharge, caused by infection with parasitic protozoa (Trichomonas vaginalis)
- any infection caused by parasitic protozoa of the genus Trichomonas
