necrotizing sialometaplasia

n.
  1. Squamous metaplasia of the salivary gland ducts and lobules with ischemic necrosis of the salivary gland lobules, occurring most frequently in the hard palate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.