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Definition of Nitrohydrochloric acid
1. Noun. A yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold).
Medical Definition of Nitrohydrochloric acid
1. An extremely caustic mixture that contains 18 parts nitric acid and 82 parts hydrochloric acid. Synonym: aqua regia, aqua regalis, nitrimuriatic acid. (05 Mar 2000)