Meaning of SATURATION in English
/ ˌsætʃəˈreɪʃn; NAmE / noun [ U ]
(often figurative ) the state or process that happens when no more of sth can be accepted or added because there is already too much of it or too many of them :
a business beset by price wars and market saturation (= the fact that no new customers can be found)
saturation bombing of the city (= covering the whole city)
There was saturation coverage (= so much that it was impossible to avoid it or add to it) of the event by the media.
( chemistry ) the degree to which sth is absorbed in sth else, expressed as a percentage of the greatest possible
mid 16th cent.: from late Latin saturatio(n-) , from Latin saturare fill, glut, from satur full.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005