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[yoo-trof-ik, -troh-fik] /yuˈtrɒf ɪk, -ˈtroʊ fɪk/
Medicine/Medical. relating to or being in a condition of eutrophy, or healthy or adequate nutrition or development.
Ecology. (of a lake) characterized by an abundant accumulation of nutrients that support a dense growth of algae and other organisms, the decay of which depletes the shallow waters of oxygen in summer.
Compare oligotrophic.
1880-85; eutroph(y) + -ic
Related forms
eutrophication, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for eutrophication
  • Nutrient-rich discharges cause eutrophication or overgrowth of algae.
  • Intended to promote the growth of plants, fertilizers also encourage the growth of algae, called eutrophication.
  • eutrophication is when a lake gets too many nutrients, causing blue-green algae growth.
  • Eventually the growth peaks and crashes as oxygen is consumed faster than it can be replenished-a condition called eutrophication.
  • Rooted underwater plants also oxygenate the water, helping to counteract any tendency toward eutrophication.
  • It might, for example, be a response to ocean eutrophication.
  • In excessive amounts, however, nutrients cause a type of pollution called eutrophication.
  • Sulfate-induced eutrophication and phytotoxicity in freshwater wetlands.
  • Phosphorus can contribute to the eutrophication of lakes and other water bodies.
  • Nutrient pollution-known as eutrophication-is the primary cause of those zones created by humans.
British Dictionary definitions for eutrophication


a process by which pollution from such sources as sewage effluent or leachate from fertilized fields causes a lake, pond, or fen to become overrich in organic and mineral nutrients, so that algae and cyanobacteria grow rapidly and deplete the oxygen supply


/juːˈtrɒfɪk; -ˈtrəʊ-/
(of lakes and similar habitats) rich in organic and mineral nutrients and supporting an abundant plant life, which in the process of decaying depletes the oxygen supply for animal life Compare oligotrophic
Derived Forms
eutrophy, noun
Word Origin
C18: probably from eutrophy, from Greek eutrophia sound nutrition, from eutrophos well-fed, from eu- + trephein to nourish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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eutrophication in Medicine

eutrophic eu·troph·ic (yōō-trŏf'ĭk, -trō'fĭk)
Relating to, characterized by, or promoting eutrophia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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eutrophication in Science
The process by which a lake, pond, or stream becomes eutrophic, typically as a result of mineral and organic runoff from the surrounding land. The increased growth of plants and algae that accompanies eutrophication depletes the dissolved oxygen content of the water and often causes a die-off of other organisms.
  (y-trŏf'ĭk, -trō'fĭk)   
Having waters rich in phosphates, nitrates, and organic nutrients that promote a proliferation of plant life, especially algae. Used of a lake, pond, or stream. Compare dystrophic, oligotrophic.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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