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

      

    intensity

     noun
    noun
    BrE BrE//ɪnˈtensəti//
     
    ; NAmE NAmE//ɪnˈtensəti//
     
    (pl. intensities)
     
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  1. 1[uncountable, singular] the state or quality of being intense intensity of light/sound/colour intensity of feeling/concentration/relief He was watching her with an intensity that was unnerving. The storm resumed with even greater intensity.
  2. 2[uncountable, countable] (specialist) the strength of something, for example light, that can be measured varying intensities of natural light
  3. Extra examples He was unable to play the final set with the same intensity. Her headaches started to increase in intensity. She brought passionate intensity to the role. The pain was growing in intensity. The sun beat down with fierce intensity. They decided to increase the intensity of the attacks. a band of light with high intensity intensity of feeling
See the Oxford Advanced American Dictionary entry: intensity