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.

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.