Longman Dictionary of Contemporary English homepage

Topic: ILLNESS AND DISABILITY

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

tumour

 noun
     
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 of tumour from the Longman Dictionary of Contemporary English within
the topic ILLNESS AND DISABILITY
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