Definition of "nevus" [nevus]

• A congenital growth or mark on the skin, such as a mole or birthmark. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "A nevus is a nest of cells that grows larger or more protuberant as we age."
• ""It looks like what's called a nevus-it's something like a flat mole, usually quite harmless."
• "Neonatal blue-light phototherapy could increase the risk of dysplastic nevus development."