Dictionary.com
definitions

Wolff-Parkinson-White syndrome

[wulf′-]
n.
  1. An electrocardiographic pattern sometimes associated with paroxysmal tachycardia, characterized by a short P-R interval together with a prolonged QRS complex with a delta wave.preexcitation syndrome WPW syndrome
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.