aphotic

[ey-foh-tik] Origin

a·pho·tic

[ey-foh-tik]
adjective
lightless; dark.

Origin:
1900–05; a-6 + photic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Aphotic is always a great word to know.
So is flibbertigibbet. Does it mean:
a fool or simpleton; ninny.
a chattering or flighty, light-headed person.
Collins
World English Dictionary
aphotic (əˈfɒtɪk)
 
adj
1.  characterized by or growing in the absence of light: an aphotic plant
2.  of or relating to the zone of an ocean below that to which sunlight can penetrate, usually about 90m (300 ft). This is the lowest level at which photosynthesis can take place
 
[C20: from a-1 + -photic, from Greek phōs light]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

aphotic
"untouched by sunlight, lightless" (in ref. to deep-sea regions), 1903, Mod.L., from Gk. a- "not, without" + phos (gen. photos) "light," related to phainein "to show, to bring to light" (see phantasm). Aphotic zone is recorded from 1913.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
aphotic   (ā-fō'tĭk)  Pronunciation Key 
  1. Having no light.

  2. Relating to the region of a body of water that is not reached by sunlight and in which photosynthesis is unable to occur. Compare photic.


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