Meaning of heliotypy | Babel Free
Definitions
A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.
uncountable
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.