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euphotic

[yoo-foh-tik] /yuˈfoʊ tɪk/
adjective
1.
noting or pertaining to the layer or zone of sea water that receives enough sunlight for photosynthesis to occur, varying greatly with season and latitude, from 0 to 1200 feet (0–360 meters).
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for euphotic
  • Of particular interest was a dramatic bloom following the injection of nitrate into the euphotic zone.
  • Determine the depth of the euphotic zone using a submersible photometer.
British Dictionary definitions for euphotic

euphotic

/juːˈfəʊtɪk; -ˈfɒt-/
adjective
1.
(ecology) denoting or relating to the uppermost part of a sea or lake down to about 100 metres depth, which receives enough light to enable photosynthesis to take place
Word Origin
C20: from eu- + photic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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euphotic in Science
euphotic
  (y-fŏt'ĭk)   
See photic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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