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Definition of ventricle noun from the Oxford Advanced American Dictionary

     

    ventricle

     noun
    noun
    NAmE//ˈvɛntrɪkl//
     
    (anatomy)
     
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  1. 1either of the two lower spaces in the heart that pump blood to the lungs or around the body compare auricle
  2. 2any hollow space in the body, especially one of four main hollow spaces in the brain
See the Oxford Advanced Learner's Dictionary entry: ventricle