ventricular fibrillation: Meaning and Definition of

ventric'ular fibrilla'tion

Pronunciation: [key]
  1. a cardiac arrhythmia characterized by rapid, chaotic electrical impulses to the ventricles, incomplete ventricular contractions, and resultant loss of pulse and blood pressure.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.