Definition of fluidity noun from the Oxford Advanced American Dictionary

     

    fluidity

     noun
    noun
    NAmE//fluˈɪdət̮i//
     
    [uncountable]
     
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  1. 1(formal) the quality of being smooth and elegant She danced with great fluidity of movement.
  2. 2(formal) the quality of being likely to change the fluidity of human behavior social fluidity
  3. 3(technology) the quality of being able to flow freely, as gases and liquids do
See the Oxford Advanced Learner's Dictionary entry: fluidity