Crossword clue: combined, or impregnated, with nitric acid, or some of its compounds. 2. (photog.) prepared with nitrate of silver.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
any compound containing the nitrate group (such as a salt or ester of nitric acid)