noun [U] [sing] 1 the stage at which no more of sth can be accepted or added because there is already too much of it or too many of them 极限;饱和点: The market for mobile phones is reaching saturation point. 移动电话的市场快要达到饱和点。
2 (in chemistry) the stage at which no more of a substance can be taken in by a liquid or VAPOUR (= a mass of very small drops of liquid in the air) (化学)饱和点