heliotypy
English
Etymology
Ancient Greek [Term?]
Noun
heliotypy (uncountable)
- A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for heliotypy in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)