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1. A photomechanically produced plate for pictures or type made by exposing a gelatin film under a negative, hardening it with chrome alum, and printing directly from it.
2. also he·li·o·typ·y (-tī′pē) The process of producing a heliotype.

he′li·o·type′ v.
he′li·o·typ′ic (-tĭp′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Printing, Lithography & Bookbinding) Also called: heliotypy a printing process in which an impression is taken in ink from a gelatine surface that has been exposed under a negative and prepared for printing
2. (Printing, Lithography & Bookbinding) the gelatine plate produced by such a process
3. (Printing, Lithography & Bookbinding) a print produced from such a plate
heliotypic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.heliotype - duplicator consisting of a gelatin plate from which ink can be taken to make a copy
copier, duplicator - apparatus that makes copies of typed, written or drawn material
collotype, collotype printing, photogelatin process - a photomechanical printing process that uses a glass plate with a gelatin surface that carries the image to be reproduced; can be used with one or more colors
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
He highlights Darwin's role in emergent technologies of photographic book printing (he used the newly developed heliotype, which preceded the photogravure technique).
He had these extremely well-formed idiosyncratic positions, the kind that happen when a critic is also an artist." Tillim's essay displayed his extensive knowledge about the histories, forms, and uses of various processes, such as photolithography, woodburytype, heliotype, albertype, photogravure, and the photoengraved halftone process, highlighting his complaint that Benjamin generalized "photography" and "reproduction" beyond usefulness, failing to attend to their specific social and formal realities.