/ Dictionary / Index V ventricular tachycardia: Meaning and Definition of Find definitions for: ventric'ular tachycar'dia Pronunciation: [key] — Pathol. Pathol. a cardiac arrhythmia in which the muscles of the ventricles contract irregularly in a rapid, uncoordinated manner, impairing the normal pumping of blood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ventricular fibrillation ventriculus Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language