# Saturation

Saturation, saturated, unsaturation or unsaturated may refer to:

## Chemistry

* Saturated and unsaturated compounds, a classification of compounds related to their ability to resist addition reactions
** Degree of unsaturation
** Saturated fat or saturated fatty acid
** Unsaturated fat or unsaturated fatty acid
** Non-susceptibility of an organometallic compound to oxidative addition
* Saturation of protein binding sites
* Saturation of enzymes with a substrate
* Saturation of a solute in a solution, as related to the solute's maximum solubility at equilibrium
** Supersaturation, where the concentration of a solute exceeds its maximum solubility at equilibrium
** Undersaturation, where the concentration of a solute is less than its maximum solubility at equilibrium

## Biology

* Oxygen saturation, a clinical measure of the amount of oxygen in a patient's blood
* Saturation pollination, a pollination technique
* Saturated mutagenesis, a form of site-directed mutagenesis
* Saturation (genetic), the observed number of mutations relative to the maximum amount possible
* Ocean saturation, more than 2.3 billion years ago: see "Great Oxygenation Event"
* Environmental saturation, environmental resistance to population growth: see "Logistic function" and "Carrying capacity"

## Physics

* Colorfulness § Saturation, see also: "Saturation intent", a rendering intent in color management
* Thermodynamic state at lower temperature bound of superheated steam
* Saturation (magnetic), the state when a magnetic material is fully magnetized
* Saturated fluid or saturated vapor, contains as much thermal energy as it can without boiling or condensing
** Saturated steam
* Dew point, which is a temperature that occurs when atmospheric relative humidity reaches 100% and the air is saturated with moisture
* Saturated absorption, a set-up that enables the precise determination of the transition frequency of an atom between its ground state and an optically excited state

## Electronics

* Saturation velocity, the maximum velocity charge carrier in a semiconductor attains in the presence of very high electric fields
* Saturation, a region of operation of a transistor § Transistor as a switch
* Saturation current, limit of flowing current through a device

## Hydrology

* Saturated zone, below the groundwater table
* Unsaturated zone, above the groundwater table
* Soil saturation, water content in a soil

## Mathematics

* Saturation (commutative algebra), the inverse image of the localization of an ideal or submodule
* Saturated model, a concept in mathematical logic
* Saturation arithmetic, in arithmetic, a version of arithmetic in which all operations are limited to fixed range
* Saturation (graph theory), a categorization of vertices in graph theory
* Saturated measure, if every locally measurable set is also measurable
* Saturated multiplicatively closed sets, a concept in ring theory

## Music

* "Saturation (song)", a 1997 single by Australian group The Superjesus
* Saturation (Urge Overkill album), 1993
* Saturation (Vas Deferens Organization album), 1996
* Saturation (Brockhampton album), 2017 (Also see Saturation II and Saturation III)

## Other uses

* Market saturation, in economics
* Saturation diving