of, pertaining to, or of the nature of a ventricle.
of or pertaining to a belly or to something resembling one.

1815–25; < Latin ventricul(us) (see ventricle) + -ar1

interventricular, adjective
subventricular, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ventricular (vɛnˈtrɪkjʊlə)
1.  of, relating to, involving, or constituting a ventricle
2.  having a belly
3.  swollen or distended; ventricose

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

ventricular ven·tric·u·lar (věn-trĭk'yə-lər)
Of or relating to a ventricle or ventriculus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
ventricle   (věn'trĭ-kəl)  Pronunciation Key 
  1. A chamber of the heart that receives blood from one or more atria and pumps it by muscular contraction into the arteries. mammals, birds, and reptiles have two ventricles; amphibians and fish have one.

  2. Any of four fluid-filled cavities in the brain of vertebrate animals. The ventricles are filled with cerebrospinal fluid.

ventricular adjective (věn-trĭk'yə-lər)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Ventricular tachycardia can occur without heart disease.
In adults, ventricular septal defects are a rare but serious complication of
  heart attacks.
When it occurs in the lower chambers of the heart, it is called ventricular
During ventricular fibrillation, blood is not removed from the heart.
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