The Collaborative International Dictionary of English v.0.48:

Nascent \Nas"cent\ (n[a^]s"sent; n[=a]"sent), a. [L. nascens,
   -entis, p. pr. nasci to be born. See Nation, and cf.
   Naissant.]
   1. Commencing, or in process of development; beginning to
      exist or to grow; coming into being; as, a nascent germ.
      [1913 Webster +PJC]

            Nascent passions and anxieties.       --Berkley.
      [1913 Webster]

   2. (Chem.) Evolving; being evolved or produced; as, nascent
      oxygen.
      [1913 Webster]

   Nascent state (Chem.), the fleeting or momentary state of
      an uncombined atom or radical just separated from one
      compound, and not yet united with another, -- a
      hypothetical condition implying peculiarly active chemical
      properties; as, hydrogen in the nascent state is a strong
      reducer.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nascent
    adj 1: being born or beginning; "the nascent chicks"; "a nascent
           insurgency" [ant: dying]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "nascent":
   abecedarian, aboriginal, antenatal, autochthonous, beginning,
   budding, creative, elemental, elementary, embryonic, fetal,
   formative, foundational, fundamental, gestatory, in embryo,
   in its infancy, in the bud, inaugural, inceptive, inchoate,
   inchoative, incipient, incunabular, infant, infantile, initial,
   initiative, initiatory, introductory, inventive, natal, original,
   parturient, postnatal, pregnant, prenatal, primal, primary, prime,
   primeval, primitive, primogenial, procreative, rudimental,
   rudimentary, ur