[an-ok-see-uh, uh-nok-]
  1. an abnormally low amount of oxygen in the body tissues; hypoxia.
  2. the mental and physical disturbances that occur as a result of hypoxia.

Origin of anoxia

First recorded in 1930–35; an-1 + ox(ygen) + -ia
Related formsan·ox·ic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for anoxic


  1. lack or absence of oxygen
  2. a deficiency of oxygen in tissues and organsCompare hypoxia
Derived Formsanoxic, adjective

Word Origin for anoxia

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

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

anoxic in Medicine


[ăn-ŏksē-ə, ə-nŏk-]
  1. The absence or reduced supply of oxygen in inspired gases, arterial blood, or tissues.
Related formsan•oxic adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.