aqua regia

[ree-jee-uh]

noun Chemistry.

a yellow, fuming liquid composed of one part nitric acid and three to four parts hydrochloric acid: used chiefly to dissolve metals as gold, platinum, or the like.

Nearby words

  1. aqtöbe,
  2. aqua,
  3. aqua ammoniae,
  4. aqua fortis,
  5. aqua pura,
  6. aqua vitae,
  7. aqua-,
  8. aqua-lung,
  9. aquacade,
  10. aquaceutical

Origin of aqua regia

1600–10; < New Latin: literally, royal water


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for aqua regia

aqua regia

noun

a yellow fuming corrosive mixture of one part nitric acid and three to four parts hydrochloric acid, used in metallurgy for dissolving metals, including goldAlso called: nitrohydrochloric acid

Word Origin for aqua regia

C17: from New Latin: royal water; referring to its use in dissolving gold, the royal metal

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for aqua regia

aqua regia

[rējē-ə, rējə]

A corrosive, fuming, volatile mixture of hydrochloric and nitric acids. Aqua regia is used for testing metals and dissolving platinum and gold.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.