- 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.
- 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
Origin of ventricleMiddle English, from Old French ventricule, from Latin ventriculus, diminutive of venter, belly.