Heliotypy

• (n.) A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.
Found on http://thinkexist.com/dictionary/meaning/heliotypy/

Heliotypy

He'li·o·ty`py noun A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.
Found on http://www.encyclo.co.uk/webster/H/28
No exact match found