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[an-ok-see-uh, uh-nok-] /ænˈɒk si ə, əˈnɒk-/
an abnormally low amount of oxygen in the body tissues; hypoxia.
the mental and physical disturbances that occur as a result of hypoxia.
Origin of anoxia
1930-35; an-1 + ox(ygen) + -ia
Related forms
anoxic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for anoxic
  • Sea water that is both deep and still, such as at the bottoms of some fjords, tends to be hypoxic or anoxic.
  • Pollution sometimes turns waters anoxic today in regions that lack good circulation.
  • But now scientists say they have found the first multicellular organisms inhabiting an anoxic environment.
  • The anoxic zone should be designed for complete denitrification to prevent the recycling of nitrates to the anaerobic zone.
British Dictionary definitions for anoxic


lack or absence of oxygen
a deficiency of oxygen in tissues and organs Compare hypoxia
Derived Forms
anoxic, adjective
Word Origin
C20: from an- + ox(ygen) + -ia
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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Word Origin and History for anoxic

1920, Modern Latin, from Greek an-, privative prefix, "not, without" (see an- (1)) + first two letters of oxygen + -ic. Anoxia "oxygen deficiency" is attested from 1931.

Online Etymology Dictionary, © 2010 Douglas Harper
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anoxic in Medicine

anoxia an·ox·i·a (ān-ŏk'sē-ə, ə-nŏk'-)
The absence or reduced supply of oxygen in inspired gases, arterial blood, or tissues.

an·ox'ic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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