A tumour of melanin-forming cells, especially a malignant tumour associated with skin cancer.‘melanomas can appear anywhere on the body’[mass noun] ‘the incidence of melanoma is rising steadily’
- ‘About half of malignant skin melanomas arise from pre-existing moles.’
- ‘There is a definite link between sunbathing and the incidence of malignant melanomas.’
- ‘Although they make up the smallest percentage of all skin cancers, melanomas cause the greatest number of deaths.’
- ‘One form of skin cancer, malignant melanoma, can spread to other organs very rapidly.’
- ‘These patients are also at risk for second cancers, including bone, brain, leukemia and lymphoma, melanomas, and soft tissue sarcomas.’
Mid 19th century: from Greek melas, melan- black + -oma.