nAutotypographyA process resembling “nature printing,” by which drawings executed on gelatin are impressed into a soft metal plate, from which the printing is done as from copperplate.
Century Dictionary and Cyclopedia
nautotypographyAny process by means of which drawings, manuscripts, etc., can be transferred directly to a plate or material from which impressions can be taken; especially, a process by which autographs executed in a special ink are transferred to a plate of zinc, which is then etched and prepared for printing on an ordinary press. See zincography.
Chambers's Twentieth Century Dictionary
nAutotypographya process by which drawings made on gelatine are transferred to a plate from which impressions may be taken