Definition of humidity noun from the Oxford Advanced Learner's Dictionary

     

    humidity

     noun
    noun
    BrE BrE//hjuːˈmɪdəti//
     
    ; NAmE NAmE//hjuːˈmɪdəti//
     
    [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.
  3. Wordfinderarid, climate, continental climate, equatorial, frigid, harsh, humidity, rainfall, tropical, zone Word Origin late Middle English: from Old French humidite or Latin humiditas, from humidus, from humere ‘be moist’.Extra examples The museum is equipped with sophisticated humidity controls. in dry weather, when the ambient humidity is low Care should be taken in conditions of high humidity. These plants need humidity to grow well.
See the Oxford Advanced American Dictionary entry: humidity