The term saturation generally means thoroughly full, and can refer to the following:

• In chemistry, see saturation (chemistry) for a number of meanings.
• In color theory, saturation refers to the intensity of a specific hue. Saturation is also a coordinate in the HSV color space. In art or when working with colors, saturation is the amount of color a certain color has. For example, black and white have no saturation and bright red has 100% saturation.
• An atmospheric humidity of 100% represents the saturation point, at which the air can hold no more moisture. see also Dew point
• In economics, there is the concept of market saturation
• Groundwater aquifers may be saturated or unsaturated
• For magnetic materials, saturation is the state when the material cannot absorb a stronger magnetic field, such that an increase in magnetization does not produce significant change in magnetic flux density.
• In telecommunications, see saturation (telecommunications) for a number of meanings.