/tjuː.mə/, /tuː.məɹ/
OriginFrom 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.
- USAn abnormal growth; differential diagnosis includes abscess, metaplasia, and neoplasia.
“a benign tumor”
“a malignant tumor”
“brain tumor”
Formstumors(plural) · tumour(alternative)