TERATOMA Meaning of TERATOMA in English /ter'euh toh"meuh/ , n. , pl. , teratomas, teratomata /-meuh teuh/ . Pathol.a tumor made up of different types of tissue. [ 1885-90; TERAT- + -OMA ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012