sclerosant

[sklə-rōsənt, -zənt]
n.
  1. An injectable irritant that is used in the treatment of varicose veins and that causes inflammation and subsequent fibrosis, thus obliterating the lumen of the vein.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.