Definition of humidity noun from the Oxford Advanced American Dictionary

     

    humidity

     noun
    noun
    NAmE//hyuˈmɪdət̮i//
     
    [uncountable]
     
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  1. 1the amount of water in the air Instruments constantly monitor temperature and humidity. high/low humidity 70% humidity
  2. 2conditions in which the air is very warm and damp These plants need heat and humidity to grow well. The humidity was becoming unbearable.
See the Oxford Advanced Learner's Dictionary entry: humidity