1. To indirectly cause the destruction of an aquatic community by allowing substantial amounts of fertilising compounds to enter a clean body of water such as a pond or river.

2. To drop a deuce into a pond or river. Implies that the resulting noxious log will kill all the fauna.
Man: Fucking hell son, what did I tell you about shitting in the sea? Do you want to eutrophicate it and see all the fishes die?
by greyshark7 March 13, 2007
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Depletion of oxygen in water:

The process by which a body of water becomes rich in dissolved nutrients from fertilizers or sewage, thereby encouraging the growth and decomposition of oxygen-depleting plant life and resulting in harm to other organisms.

If they keep dumping so much sewage water in the river, eutrophication will be so bad that you won't be able to see through the algea.

Eutrophication = bad

Def by Juliette
by Jafje June 28, 2007
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Eutrophication - Shit Gary, you just eutrophicated that pond!
by Alex Reah January 21, 2006
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