periodic acid-Schiff

[pûr′ī-ŏdĭk]
adj.
  1. Of, relating to, or being a reaction that tests for polysaccharides and related substances through the treatment of tissue sections with periodic acid stain and Schiff's reagent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.