Main Entry: tu·mor

Variant(s): or chiefly British tu·mour \ˈt(y)ü-mər\

Function: noun

: an abnormal benign or malignant new growth of tissue that possesses no physiological function and arises from uncontrolled usually rapid cellular proliferation—see cancer 1, carcinoma, sarcoma

—tu·mor·like \-ˌlīk\ adjective