Dysgenesis

2 definitions found

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

  Dysgenesis \Dys*gen"e*sis\, n. [Pref. dys- + genesis.] (Biol.)
     A condition of not generating or breeding freely;
     infertility; a form of homogenesis in which the hybrids are
     sterile among themselves, but are fertile with members of
     either parent race.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  dysgenesis
       n : infertility between hybrids