tumor tummy • tumored · · · Info · Definitions · Synonyms · Characters · · tumor · · Text Latin · · Script 5 · · Length Definitions · · · (noun) an abnormal new mass of tissue that serves no purpose. Synonyms: tumour, neoplasm. · · Noun Definition 1 Synonyms · · · tumour · · Synonym 1 neoplasm · · Synonym 2 Characters · · m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075