NOUN (2)

1. a person or thing represented or foreshadowed by a type or symbol; especially a figure in the Old Testament having a counterpart in the New Testament;

2. an opposite or contrasting type;

The Collaborative International Dictionary of English v.0.48:

Antitype \An"ti*type\, n. [Gr. ? of corresponding form; 'anti`
   against + ? type, figure. See Type.]
   That of which the type is the pattern or representation; that
   which is represented by the type or symbol.
   [1913 Webster]

WordNet (r) 3.0 (2006):

antitype
    n 1: a person or thing represented or foreshadowed by a type or
         symbol; especially a figure in the Old Testament having a
         counterpart in the New Testament
    2: an opposite or contrasting type [ant: type]