1) a thing formed after some pattern
2) a thing resembling another, its counterpart
2a) something in the Messianic times which answers to the type, as baptism corresponds to the deluge (1Pe 3:21)
Part of Speech: adjective
Citing in TDNT: 8:246, 1193
Neuter of a compound of G473 and G5179; corresponding ("antitype"), that is, a representative, counterpart: - (like) figure (whereunto).
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἀντίτυπος; click on the second column to search for that grammatical form of the root ἀντίτυπος; click on the third column to search for that word and grammatical form; click on the total to search for the root ἀντίτυπος.