Medical Dictionary


noun ar·ni·ca \ˈär-ni-kə\

Medical Definition of ARNICA

a capitalized :  a large genus of composite herbs having flower heads that are discoid or have bright yellow rays b :  a plant of the genus Arnica
a :  the dried flower head of any of several herbs of the genus Arnica (especially A. montana) used for stimulant and local irritant effect especially in the form of a liniment for bruises, sprains, and swellings b :  a tincture made from arnica


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