Lewis & Short

prīmĭgĕnĭus, a, um, adj. [primusgeno, gigno].

  1. I. First of all, first of its kind, original, primitive (ante- and post-class.): pecuaria, Varr. R. R. 2, 2: semina, id. ib. 1, 40: seminis fontes, Amm. 14, 6, 17: verba, radical words, primitives, Varr. L. L. 6, § 36 Müll.: primigenius sulcus dicitur, qui in condendā novā urbe tauro et vaccā designationis causā imprimitur, Paul. ex Fest. p. 236 Müll.
  2. II. Subst.
    1. A. prīmĭgĕnĭa, ōrum, n., the first principle or nature: rerum, Amm. 26, 10, 16.
    2. B. Prīmĭgĕ-nĭi, ōrum, m., an epithet of the Phrygians, who claimed to be the first men, App. M. 11, p. 259, 7.
    3. C. Prīmĭgĕnĭa, ae, f., an epithet of Fortuna, as the attendant of her favorite from birth, Cic. Leg. 2, 11, 28; Liv. 29, 36, 8; 34, 53, 5.