simple past tense and past participle of saturate
"The sponge was saturated, so it could not absorb any more water."
In plain English: To saturate something means to soak it completely so that no more liquid can be absorbed.
"The sponge was so saturated with water that I could barely hold it up without dripping everywhere."
being the most concentrated solution possible at a given temperature; unable to dissolve still more of a substance
"a saturated solution"
used especially of organic compounds; having all available valence bonds filled
"saturated fats"
Full; unable to hold or contain any more.
"The sponge was so saturated that it could not absorb another drop of water."
In plain English: Saturated means completely full so that nothing more can be added, whether it is liquid holding as much solute as possible or an area being crowded with people.
"The sponge was so saturated with water that no more could be absorbed."
Usage: Use saturated specifically when referring to liquids, solutions, or porous materials that have absorbed the maximum amount of a substance. Avoid using it as a general synonym for "full" in contexts like emotions or schedules, where words like exhausted or packed are more appropriate.