Lewis & Short

praegnātĭo, ōnis, f. [praegnas], a getting with child or with young, a making pregnant; a being with child or with young, pregnancy (ante- and post-class.).

  1. I. Lit., App. M. 1, p. 106, 21.
    Of animals, Varr. R. R. 2, 1.
    1. B. Transf., of plants, Varr. R. R. 1, 44.
  2. II. Trop., the cause of fertility, the universal productiveness of nature: o naturarum omnium fecunda praegnatio, App. Trismeg. p. 101, 30.