[noun] 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" Synonyms:strength, level
[noun] high level or degree; the property of being intense Synonyms:intensiveness
[noun] the magnitude of sound (usually in a specified direction); "the kids played their music at full volume" Synonyms:volume, loudness
[noun] chromatic purity: freedom from dilution with white and hence vividness of hue Synonyms:saturation, chroma, vividness