tumor

Meanings

1. 1
   noun

   An abnormal growth; differential diagnosis includes abscess, metaplasia, and neoplasia.

   a benign tumor

2. 2
   noun

   an abnormal new mass of tissue that serves no purpose

Etymology

From Middle English tumour, from Old French tumour, from Latin tumor (“swelling”), from tumeō (“bulge, swell”, verb), from Proto-Italic *tumēō, from Proto-Indo-European *tewh₂- (“to swell”). Related to English thumb.