DYSGENESIS

dysgenesis

(noun) infertility between hybrids

Source: WordNet® 3.1

Etymology

Noun

dysgenesis (plural dysgeneses)

(medicine) Defective development

Source: Wiktionary

Dys*gen"e*sis, n. Etym: [Pref. dys- + genesis.] (Biol.)

Definition: A condition of not generating or breeding freely; infertility; a form homogenesis in which the hybrids are sterile among themselves, but are fertile with members of either parent race.

Source: Webster’s Unabridged Dictionary 1913 Edition