/trik'euh meuh nuy"euh sis/ , n. Pathol.
1. 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.
2. any of various other diseases caused by a trichomonad.
[ 1915-20; TRICHOMON(AD) + -IASIS ]