Medical Dictionary

lichen

noun li·chen \ˈlī-kən\

Medical Definition of LICHEN

1
:  any of several skin diseases characterized by the eruption of flat papules; especially :  lichen planus
2
:  any of numerous complex plantlike organisms made up of an alga and a fungus growing in symbiotic association on a solid surface (as a rock)
July 07, 2015
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