saturation

(noun) the process of totally saturating something with a substance. Synonyms: impregnation. Examples: "The impregnation of wood with preservative." "The saturation of cotton with ether."

(noun) the act of soaking thoroughly with a liquid.

(noun) a condition in which a quantity no longer responds to some external influence.

(noun) chromatic purity: freedom from dilution with white and hence vivid in hue. Synonyms: chroma, intensity, vividness.