Secundine

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Secundine \Sec"un*dine\, n. [Cf. F. secondine.]
     1. (Bot.) The second coat, or integument, of an ovule, lying
        within the primine.
        [1913 Webster]
  
     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.
           [1913 Webster]
  
     2. [Cf. F. secondines.] The afterbirth, or placenta and
        membranes; -- generally used in the plural.
        [1913 Webster]