Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A dark-pigmented, usually malignant tumor arising from a melanocyte and occurring most commonly in the skin.

from The Century Dictionary.

  • noun A dark-pigmented tumor.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A tumor containing dark pigment. Such tumors are usually malignant and often fatal.
  • noun Development of dark-pigmented tumors.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun oncology, pathology A dark-pigmented, usually malignant tumor arising from a melanocyte and occurring most commonly in the skin.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any of several malignant neoplasms (usually of the skin) consisting of melanocytes

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin, from Ancient Greek μέλας (melas, "black, dark") and -oma ("disease, morbidity").

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