The Collaborative International Dictionary of English v.0.48:
Unborn \Un*born"\, a. Not born; not yet brought into life; being still to appear; future. [1913 Webster] Some unborn sorrow, ripe in fortune's womb. --Shak. [1913 Webster] See future sons, and daughters yet unborn. --Pope. [1913 Webster]WordNet (r) 3.0 (2006):
unborn adj 1: not yet brought into existence; "unborn generations" [ant: born]