(n.) A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Heliotypy. Retrieved October 2, 2026, from http://smartdefine.org/heliotypy/definitions/2015721 |
| Chicago | Webster's. 2011. "Heliotypy" http://smartdefine.org/heliotypy/definitions/2015721 (accessed October 2, 2026). |
| Harvard | Webster's 2011, Heliotypy, Smart Define, viewed 2 October, 2026, <http://smartdefine.org/heliotypy/definitions/2015721>. |
| MLA | Webster's. "Heliotypy" 27 May 2011. Web. 2 October 2026. <http://smartdefine.org/heliotypy/definitions/2015721> |