The Collaborative International Dictionary of English v.0.48:

Annunciate \An*nun"ci*ate\, v. t. [imp. & p. p. Annunciated;
   p. pr. & vb. n. Annunciating.] [L. annuntiare. See
   Announce.]
   To announce.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Annunciate \An*nun"ci*ate\, p. p. & a.
   Foretold; preannounced. [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

annunciate
    v 1: foreshadow or presage [syn: announce, annunciate,
         harbinger, foretell, herald]