Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Latin
Origin: tumere 'to swell'

tumour

 noun
     
NEW! See related topics: ILLNESS AND DISABILITY
tu‧mour British English ; tumor American English [countable]
MI a mass of diseased cells in your body that have divided and increased too quickly:
malignant/benign tumour (=caused by or not caused by cancer)
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
 
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