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aqua re·gi·a(rē′jē-ə, rē′jə)
A corrosive, fuming, volatile mixture of hydrochloric and nitric acids, used for testing metals and dissolving platinum and gold. Also called nitrohydrochloric acid.
[New Latin aqua rēgia : Latin aqua, water + Latin rēgia, feminine of rēgius, royal (because it dissolves gold, the "royal metal").]
(Elements & Compounds) 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. Also called: nitrohydrochloric acid
[C17: from New Latin: royal water; referring to its use in dissolving gold, the royal metal]
aq′ua re′gi•a(ˈri dʒi ə)
a mixture of nitric and hydrochloric acids used to dissolve precious metals.
[1600–10; < New Latin: literally, royal water]
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|Noun||1.||aqua regia - a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold)|
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt