Dictionary.com
definitions

melanoma

[mel-uh-noh-muh]
noun, plural mel·a·no·mas, mel·a·no·ma·ta [mel-uh-noh-muh-tuh] /ˌmɛl əˈnoʊ mə tə/. Pathology.
  1. any of several types of skin tumors characterized by the malignant growth of melanocytes.

Origin of melanoma

First recorded in 1825–35; melan- + -oma
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for melanoma

Contemporary Examples of melanoma

British Dictionary definitions for melanoma

melanoma

noun plural -mas or -mata (-mətə)
  1. pathol a malignant tumour composed of melanocytes, occurring esp in the skin, often as a result of excessive exposure to sunlight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for melanoma
n.

"tumor containing melanin," 1826, medical Latin, from Greek melas (genitive melanos) "black" (see melanin) + -oma.

Online Etymology Dictionary, © 2010 Douglas Harper
melanoma in Medicine

melanoma

[mĕl′ə-nō′mə]
n. pl. mel•a•no•mas
  1. A dark-pigmented, malignant, frequently widely metastasizing tumor arising from a melanocyte and occurring most commonly in the skin.malignant melanoma melanoblastoma melanocarcinoma melanotic carcinoma
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
melanoma in Science

melanoma

[mĕl′ə-nō′mə]
Plural melanomas melanomata (mĕl′ə-nō′mə-tə)
  1. A dark-pigmented benign or malignant tumor that arises from a melanocyte and occurs most commonly in the skin. Malignant melanoma metastasizes quickly and is associated with sun exposure.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
melanoma in Culture

melanoma

[(mel-uh-noh-muh)]

A serious, often lethal, form of skin cancer.

Note

Exposure to ultraviolet radiation from the sun (for example, by too much sunbathing) can cause this disease.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.