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Definition of Aqua regia
1. Noun. A yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold).
Definition of Aqua regia
1. Noun. (obsolete inorganic chemistry) A mixture of three parts concentrated hydrochloric acid to one part concentrated nitric acid. ¹
¹ Source: wiktionary.com
Medical Definition of Aqua regia
1. An alternative term for nitrohydrochloric acid. Origin: L. Royal water, so called from its power to dissolve gold (05 Mar 2000)