n. 发育不全

[医] 发育不全, 畸形, 生殖力障碍, 不孕

[ noun ]
infertility between hybrids
<noun.state>

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.