from The Century Dictionary.

  • noun A print produced by exposing another print or a writing, placed on the surface of chemically prepared paper, to a gas which permeates those parts of the thing to be copied which are not rendered impervious by the ink, and thus acts upon the chemical surface in the same way that light acts upon the sensitized film of paper exposed under a photographic negative.

from the GNU version of the Collaborative International Dictionary of English.

  • noun 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.


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