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exogen

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exogen


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Exogen  \Ex"o*gen\,  n.  [Exo-  +  -gen:  cf  F.  exog[`e]ne.]  (Bot.) 
  A  plant  belonging  to  one  of  the  greater  part  of  the  vegetable 
  kingdom,  and  which  the  plants  are  characterized  by  having  c 
  wood  bark,  and  pith,  the  wood  forming  a  layer  between  the 
  other  two  and  increasing,  if  at  all  by  the  animal  addition 
  of  a  new  layer  to  the  outside  next  to  the  bark.  The  leaves 
  are  commonly  netted-veined,  and  the  number  of  cotyledons  is 
  two  or  very  rarely,  several  in  a  whorl.  Cf  {Endogen}. 
  --Gray. 




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