aurochloride

Wiktionary

1. n. inorganic chemistry, uncountable The complex anion, AuCl4-, produced when gold is dissolved in aqua regia.
2. n. inorganic chemistry, countable Any salt containing this anion.

GNU Webster's 1913

1. n. (Chem.) The trichloride of gold combination with the chloride of another metal, forming a double chloride; -- called also chloraurate.