saturation point

Từ điển Oxford Advanced Learner 8th

ˌsatuˈration point [saturation point saturation points] BrE NAmE noun uncountable, singular
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
•The market for computer games has reached saturation point.
2. (chemistry)the stage at which no more of a substance can be absorbed into a liquid or ↑vapour