Porotype

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Porotype \Po"ro*type\, n. [See {Pore}, n., and {-type}.]
     A copy of a print, writing, etc., made by placing it upon a
     chemically prepared paper which is acted upon by a gas which
     permeates the paper of the print, writing, etc.
     [Webster 1913 Suppl.]