(1) Containing as much as it can contain under given conditions of temperature and pressure, as in:

  * solid dissolved in liquid.
  * gas dissolved in liquid.
  * liquid dissolved in gas

(2) Filled to capacity, as fluid (liquid or gas) in [[formation]].

(3) Reached the limit of its measuring capacity, as in electrical instruments. The capability of an instrument to detect variations is decreased as the measuring instrument nears saturation.