Wiktionary
n. (context agriculture English) The process of becoming eutrophic.
Wikipedia
Eutrophication ( Greek: eutrophia (from eu "well" + trephein "nourish".); ), or more precisely hypertrophication, is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system. One example is the "bloom" or great increase of phytoplankton in a water body as a response to increased levels of nutrients. Negative environmental effects include hypoxia, the depletion of oxygen in the water, which may cause death to aquatic animals.
Usage examples of "eutrophication".
Some continental examples of ecological sinks include extremely desertified areas, bodies of water where eutrophication has used up the oxygen, and lakes killed by acid rain.
Eutrophication, said Sidewise: Even now, artificial nutrients—notably phosphorus—were leaching out of the land into the lake and overstimulating the miniature ecology.