Meaning of tumour in English:


Pronunciation /ˈtjuːmə/

See synonyms for tumour


(US tumor)
  • 1A swelling of a part of the body, generally without inflammation, caused by an abnormal growth of tissue, whether benign or malignant.

    ‘One of the commonest reasons for undertaking a biopsy is to establish whether a tumour is malignant or benign.’
    • ‘Both benign and malignant tumors showed ulceration of the overlying mucosa.’
    • ‘Malignant brain tumors grow and spread into neighboring tissues rapidly.’
    • ‘In the brain, both malignant and benign tumours can be harmful because they increase pressure in the skull.’
    • ‘The knee is the most common joint involved in both benign and malignant tumors.’
    • ‘The difference between malignant and benign tumours is that malignant tumours have the ability to invade surrounding areas.’
    • ‘Benign tumors called neurofibromas are found on or under the skin or along the nerves of the body.’
    • ‘One theory is that the rate at which tumor cells die is too slow to keep pace with the rapid growth and mutation of tumors in the body.’
    • ‘A benign glomus tumor surrounding a malignant area is found in about half of the cases.’
    • ‘Malignant tumors usually are associated with ascites and demonstrate rapid growth.’
    • ‘Malignant brain tumors can grow rapidly, crowding or destroying nearby brain tissue.’
    • ‘Cancer of the throat can involve malignant tumors on the vocal cords, voice box, or other areas of the throat.’
    • ‘It is important to remember that in a lot of cases tumours are benign (not cancerous).’
    • ‘Malignant tumors have the ability to transfer disease from organ to another.’
    • ‘Cancer happens when some of the cells multiply in an abnormal way, causing a growth called a tumour to form.’
    • ‘These tumors can kill your body's healthy tissues and spread to other parts of your body.’
    • ‘An appropriate strength sun block will minimise the risks of burning, with its associated risk of malignant tumours.’
    • ‘My wife had a bad experience, she had the most malignant of the brain tumours that can occur.’
    • ‘Malignant tumours are the real cancers and they behave quite differently from benign tumours.’
    • ‘Given the slow growth of prostatic tumors, such a delay should not affect treatment outcomes.’
    cancerous growth, malignant growth, cancer, malignancy, met
    View synonyms
    1. 1.1 archaic A swelling of any kind.


Late Middle English from Latin tumor, from tumere ‘to swell’.