plural -omas, -omata.
British Dictionary definitions for -oma
n combining form
Word Origin for -oma
Word Origin and History for -oma
word-forming element, from Greek -oma, with lengthened stem vowel + -ma, suffix forming neuter nouns and nouns that indicate result of verbal action (equivalent of Latin -men); especially taken in medical use as "morbid growth, tumor," based on sarcoma, carcinoma.