definition of
saturation

[1] #1 saturation n. [impregnation] the process of totally saturating something with a substance; "the impregnation of wood with preservative"; "the saturation of cotton with ether". wn

[2] #2 saturation n. the act of soaking thoroughly with a liquid. wn

[3] #3 saturation n. a condition in which a quantity no longer responds to some external influence. wn

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