spider nevus

noun

Medical Definition of spider nevus

: a pigmented area on the skin formed of dilated capillaries or arterioles radiating from a central point like the legs of a spider

called also spider angioma

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Cite this Entry

“Spider nevus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/spider%20nevus. Accessed 24 Sep. 2020.

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