Saturation

1. n. Freedom from mixture or dilution with white; purity; — said of colors.
2. n. The act of saturating, or the state of being saturating; complete penetration or impregnation.
3. n. The act, process, or result of saturating a substance, or of combining it to its fullest extent.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.