1817, "inclined to the production of offspring, fond of children," irregularly formed from philo- + Latin progenit-, past-participle stem of progignere (see progeny). Philoprogenitiveness "the love of offspring, instinctive love of the young in general" is from 1815. Both first attested in translations of Spurzheim and important words among the phrenologists. Related: Philoprogeneity.
updated on May 21, 2020