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anaerobe

[an-uh-rohb, an-air-ohb] /ˈæn əˌroʊb, ænˈɛər oʊb/
noun
1.
an organism, especially a bacterium, that does not require air or free oxygen to live (opposed to aerobe).
Origin
1875-1880
1875-80; an-1 + aerobe
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for anaerobes

anaerobe

/æˈnɛərəʊb; ˈænərəʊb/
noun (pl) -obes, -obia (-ˈəʊbɪə)
1.
an organism that does not require oxygen for respiration Compare aerobe
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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anaerobes in Medicine

anaerobe an·aer·obe (ān'ə-rōb', ān-âr'ōb')
n.
An organism that can live in the absence of atmospheric oxygen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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anaerobes in Science
anaerobe
  (ān'ə-rōb')   
An organism, such as a bacterium, that can or must live in the absence of oxygen. Compare aerobe.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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