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Also spelled tumours
US
/tuː.məɹ/
UK
/tjuː.mə/
See IPA manual
Freq #6361
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.
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