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polyarteritis

American

[pol-ee-ahr-tuh-rahy-tis] / ˌpɒl iˌɑr təˈraɪ tɪs /

noun

Pathology.

inflammation of the layers of an artery or of many arteries, usually caused by a severe hypersensitivity reaction, and characterized by nodules and hemorrhage along the involved vessels.

From New Latin, dating back to 1905–10; see origin at poly-, arteritis

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023