Definition of upthrust noun from the Oxford Advanced American Dictionary

     

    upthrust

     noun
    noun
    NAmE//ˈʌpθrʌst//
     
    [uncountable]
     
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  1. 1(physics) the force with which a liquid or gas pushes up against an object that is floating in it
  2. 2(geology) = uplift
See the Oxford Advanced Learner's Dictionary entry: upthrust

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