nevus

nevus definition - medical

ne·vus (nēˈvəs)

noun pl. ne·vi (-vīˌ)
  1. A congenital circumscribed growth or mark on the skin, such as a mole or birthmark, colored by hyperpigmentation or increased vascularity.
  2. A benign localized overgrowth of melanin-forming cells arising in the skin early in life.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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