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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Anaerobia  \An*a`["e]r*o"bi*a\,  Anaerobes  \An*a"["e]r*obes\,  n. 
  pl  [NL.  anaerobia;  an-not  +  a["e]ro-  +  Gr.?  life.] 
  Ana["e]robic  bacteria.  They  are  called  facultative 
  ana["e]robia  when  able  to  live  either  in  the  presence  or 
  absence  of  free  oxygen;  obligate,  or  obligatory,  ana["e]robia 
  when  they  thrive  only  in  its  absence.