The Collaborative International Dictionary of English v.0.48:

Polytype \Pol"y*type\, n. [Poly- + -type: cf. F. polytype, a.]
   (Print.)
   A cast, or facsimile copy, of an engraved block, matter in
   type, etc.; as, a polytype in relief -- Pol"y*type, a.
   [Webster 1913 Suppl.]

         By pressing the wood cut into semifluid metal, an
         intaglio matrix is produced: and from this matrix, in a
         similar way, a polytype in relief is obtained.
                                                  --Hansard.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Polytype \Pol"y*type\, a. (Print.)
   Of or pertaining to polytypes; obtained by polytyping; as, a
   polytype plate.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Polytype \Pol"y*type\, v. t. [imp. & p. p. Polytyped; p. pr. &
   vb. n. Polytyping.] (Print.)
   To produce a polytype of; as, to polytype an engraving.
   [1913 Webster]