Trendelenburg's test

n.
  1. A test of the valvular competence of the leg veins in which the leg is raised above the level of the heart until the veins are empty and then the leg is rapidly lowered.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.