- The definition of a ventricle is a cavity in an organism that lies in the brain or heart.
An example of a ventricle is a chamber in the heart that gets blood from the atria and pumps blood into the arteries.
Anat., Zool. any of various cavities or hollow organs; specif.,
- either of the two lower chambers of the heart which receive blood from the atria and pump it into the arteries
- any of the four small continuous cavities within the brain
Origin of ventricleMiddle English ; from Classical Latin ventriculus, stomach, ventricle, diminutive of venter: see ventral
A small cavity or chamber within a body or organ, especially:
a. The chamber on the left side of the heart that receives arterial blood from the left atrium and contracts to force it into the aorta.
b. The chamber on the right side of the heart that receives venous blood from the right atrium and forces it into the pulmonary artery.
c. Any of the interconnecting cavities of the brain.
Origin of ventricleMiddle English, from Old French ventricule, from Latin ventriculus, diminutive of venter, belly.