Source : Webster's Revised Unabridged Dictionary (1913)

Monotype \Mon"o*type\, Monotypic \Mon`o*typ"ic\, a. [Mono- +
   -type: cf. F. monotype.] (Biol.)
   Having but one type; containing but one representative; as, a
   monotypic genus, which contains but one species.

Monotype \Mon"o*type\, n. [Mono- + -type.]
   1. (Biol.) The only representative of its group, as a single
      species constituting a genus.

   2. A print (but one impression can be taken) made by painting
      on metal and then transferring the painting to paper by
      pressure; also, the process of making such prints.

   3. A kind of typesetting and casting machine that makes and
      sets individual types.

Source : WordNet®

monotype
     n 1: (biology) a taxonomic group with a single member (a single
          species or genus)
     2: a typesetting machine operated from a keyboard that sets
        separate characters