Definitions for "malignant melanoma"
Any of several malignant neoplasms (usually of the skin) consisting of melanocytes; called also melanoma. It is classed as a type of skin cancer.
a usually dark, malignant tumor of the skin; contains melanin
Cancer of the melanocytes, the cells that produce pigment in the skin. Most common in people with fair skin, but can occur in all races. Appears as a dark, mole-like spot that spreads and, unlike a mole, has an irregular border. Tendency toward melanoma may be inherited, and risk increases with overexposure to the sun and sunburn. Fair-skinned people and people with a family history of melanoma should always use a high-SPF sunscreen when outdoors. Detected early, melanoma is almost always treatable, but undetected melanoma can spread and become fatal.