Definition of ventricle in US English:

ventricle

noun

Anatomy
  • 1A hollow part or cavity in an organ.

    • ‘It communicated with the left ventricle through an orifice surrounded by pearly endocardial plaque.’
    • ‘As the impulse travels down the bundles, the ventricles contract and the cycle repeats itself.’
    space, chamber, hollow, hole, pocket, pouch
    View synonyms
    1. 1.1 Each of the two main chambers of the heart, left and right.
      • ‘Blood vessels that originate from the right and left ventricles are designated as arteries and have a distinctive structure.’
      • ‘Blood flows from the right atrium to the right ventricle through the tricuspid valve.’
      • ‘At operation, dense adhesions between the left lung and the right and left ventricle were present.’
      • ‘After passing to the left ventricle through the mitral valve, blood goes to the aorta.’
      • ‘In chickens, the right ventricle of the heart enlarges and can't pump blood efficiently to the lungs.’
    2. 1.2 Each of the four connected fluid-filled cavities in the center of the brain.
      • ‘Examination of the brain revealed only enlarged lateral and third ventricles.’
      • ‘The subarachnoid space is continuous with the cavities of the cerebral ventricles.’
      • ‘The fourth ventricle is between the pons and cerebellum.’
      • ‘There was no definite plane between the tumor and the floor of the fourth ventricle.’
      • ‘Finally, the perceived object could enter into the rear ventricle of the brain, the memory.’

Origin

Late Middle English: from Latin ventriculus, diminutive of venter ‘belly’.

Pronunciation

ventricle

/ˈventrək(ə)l//ˈvɛntrək(ə)l/