definition of
intensity

[1] #1 intensity n. [strength, intensity level] the amount of energy transmitted (as by acoustic or electromagnetic radiation); "he adjusted the intensity of the sound"; "they measured the station's signal strength". wn

[2] #2 intensity n. [intensiveness] high level or degree; the property of being intense. wn

[3] #3 intensity n. [volume, loudness] the magnitude of sound (usually in a specified direction); "the kids played their music at full volume". wn

[4] #4 intensity n. [saturation, chroma, vividness] chromatic purity: freedom from dilution with white and hence vivid in hue. wn