Definition of intensity noun from the Oxford Advanced American Dictionary

      

    intensity

     noun
    noun
    NAmE//ɪnˈtɛnsət̮i//
     
    (pl. intensities)
     
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  1. 1[uncountable, singular] the state or quality of being intense intensity of light/sound/color 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] (technology) the strength of something, for example light, that can be measured varying intensities of natural light
See the Oxford Advanced Learner's Dictionary entry: intensity