|aqua regia (ˈriːdʒɪə)|
|Also called: nitrohydrochloric acid a yellow fuming corrosive mixture of one part nitric acid and three to four parts hydrochloric acid, used in metallurgy for dissolving metals, including gold|
|[C17: from New Latin: royal water; referring to its use in dissolving gold, the royal metal]|
mixture of concentrated nitric and hydrochloric acids, usually one part of the former to three parts of the latter by volume. This mixture was given its name (literally, "royal water") by the alchemists because of its ability to dissolve gold and other so-called noble metals.
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