noun Pathology.
  1. 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.

Origin of polyarteritis

From New Latin, dating back to 1905–10; see origin at poly-, arteritis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

polyarteritis in Medicine


  1. Simultaneous inflammation of a number of arteries.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.