Definition of life force noun from the Oxford Advanced Learner's Dictionary

     

    life force

     noun
    noun
    BrE
     
    ; NAmE
     
    [uncountable]
     
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  1. 1the force that gives somebody/something their strength or energy He looked very ill—his life force seemed to have drained away.
  2. 2the force that keeps all life in existence In Hindi philosophy the life force is known as prana.
See the Oxford Advanced American Dictionary entry: life force