euphotic

[ yoo-foh-tik ]
/ yuˈfoʊ tɪk /

adjective

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).

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British Dictionary definitions for euphotic

euphotic
/ (juːˈfəʊtɪk, -ˈfɒt-) /

adjective

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 for euphotic

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

Scientific definitions for euphotic

euphotic
[ yōō-fŏtĭk ]

See photic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.