oversaturation
/ˌəʊvəˌsatʃʊˈreɪʃn/ /ˌəʊvəˌsatjʊˈreɪʃn/noun
The property or condition of being oversaturated. Also (occasionally): the action or process of saturating a substance to excess.
Origin
Mid 19th century. From over- + saturation, after oversaturate.