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aerobe

[air-ohb] /ˈɛər oʊb/
noun
1.
an organism, especially a bacterium, that requires air or free oxygen for life (opposed to anaerobe).
Origin
1875-1880
1875-80; aer- + (micr)obe
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for aerobe

aerobe

/ˈɛərəʊb/
noun (pl) -obes, -obia (-ˈəʊbɪə)
1.
an organism that requires oxygen for respiration Compare anaerobe
Word Origin
C19: from aero- + Greek bios life. Compare microbe
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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aerobe in Medicine

aerobe aer·obe (âr'ōb')
n.
An organism, such as a bacterium, requiring oxygen to live.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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aerobe in Science
aerobe
  (âr'ōb')   
An organism, such as a bacterium, that can or must live in the presence of oxygen. Compare anaerobe.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for aerobe

an organism able to live and reproduce only in the presence of free oxygen (e.g., certain bacteria and certain yeasts). Organisms that grow in the absence of free oxygen are termed anaerobes; those that grow only in the absence of oxygen are obligate, or strict, anaerobes. Some species, called facultative anaerobes, are able to grow either with or without free oxygen. Certain others, able to grow best in the presence of low amounts of oxygen, are called microaerophiles.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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