Medical Definition of GENITOURINARY TRACT. : the system of organs comprising those concerned with the production and excretion of urine and those concerned with reproduction—called also genitourinary system, urogenital system, urogenital tract. What made you want to look up genitourinary tract?edical Definition of GENITOURINARY TRACT. : the system of organs comprising those concerned with the production and excretion of urine and those concerned with reproduction—called also genitourinary system, urogenital system, urogenital tract. What made you want to look up genitourinary tract?