or chiefly Brit  tu*mour  n :  an abnormal benign or malignant mass of tissue that is not inflammatory, arises without obvious cause from cells of preexistent tissue, and possesses no physiological function - compare CANCER1 CARCINOMA SARCOMA  tu*mor*like adj 
 
 
 
Similar sounding terms:  dam·ar  day·mare  di·mer  tam·bour 
 
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