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colloquialize | colloquially | colloquist | colloquium | colloquy | collotype | collotype printing | collow | colluctancy | colluctation | collude





collotypen. [Gr. glue + -type.].
     A photomechanical print made directly from a hardened film of gelatin or other colloid; also, the process of making such prints. According to one method, the film is sensitized with potassium dichromate and exposed to light under a reversed negative. After the dichromate has been washed out, the film is soaked in glycerin and water. As this treatment causes swelling in those parts of the film which have been acted on by light, a plate results from which impressions can be taken with prepared ink. The albertype, phototype, and heliotype are collotypes.  [Webster 1913 Suppl.]


collotype, n. Printing 1 a thin sheet of gelatin exposed to light, treated with reagents, and used to make high quality prints by lithography.
2 a print made by this process.

Gk kolla glue + TYPE

For further exploring for "collotype" in Webster Dictionary Online

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