a. Obs.–0 [incorrectly f. EXTRA- + L. gen-us kind, on supposed analogy of homogeneous, -genous.] (See quot.) Also Extrageneity, ‘the being of a foreign kind’ (Bailey, 1727–36).
1706. Phillips (ed. Kersey), Extra-genous (in Anatomy and Surgery) that is of a foreign kind; as an Extragenous Body.
1884. Syd. Soc. Lex., Extrageneous.
