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secundine

secundine


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Secundine  \Sec"un*dine\,  n.  [Cf.  F.  secondine.] 
  1.  (Bot.)  The  second  coat,  or  integument,  of  an  ovule,  lying 
  within  the  primine. 
 
  Note:  In  the  ripened  seed  the  primine  and  secundine  are 
  usually  united  to  form  the  testa,  or  outer  seed  coat. 
  When  they  remain  distinct  the  secundine  becomes  the 
  mesosperm,  as  in  the  castor  bean. 
 
  2.  [Cf.  F.  secondines.]  The  afterbirth,  or  placenta  and 
  membranes;  --  generally  used  in  the  plural.