bigenousadj.
/bʌɪˈdzɛnəs/, U.S. /baɪˈdzɛnəs/ rare. Now disused.
In the terminology of J. Kőrösi: of or relating to a calculation predicting the fertility of a given couple using their respective ages.
ΚΠ
1894 J. Kőrösi in Proc. Royal Soc. 55 17 The tables containing the fertility of each sex separately I call monogenous, the others bigenous. Here follow some samples of the bigenous tables: for husbands of 39 years of age the probability of becoming fathers is: with a wife of 20 years... 27 p.c... with a wife of 30 years... 20 p.c.
1905 C. J. Lewis & J. N. Lewis Natality & Fecundity iii. 22 The calculation is bigenous, and we take first the whole female population, whether married or not.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online December 2021).
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adj.1894