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to, or designating, a complex nitrogenous acid, obtained by the action of acetic acid and potassium nitrite on uric acid, as a yellow crystalline substance, with a bitter, astringent taste.

containing a relatively small amount of oxygen, and less than the normal proportion; as, potassium suboxide, K4O.

A sulphide; as, a sulphuret of potassium. [Obsoles.]

rivative of hydrogen sulphide in which one half of the hydrogen is replaced by a base (as potassium sulphydrate, KSH), or as a hydrate in which the oxygen has been wholly or partially replaced by sulphur.

Native potassium chloride.

tially of crude cream of tartar, and used in marking pure cream of tartar, tartaric acid, potassium carbonate, black flux, etc., and, in dyeing, as a mordant for woolen goods; -- called also argol, wine stone, etc.

Potassium carbonate, obtained by the incineration of tartar. [Obs.]

ly an effervescent solution of sodium, calcium, and magnetism carbonates, with sodium and potassium chlorides; also, by extension, any artificial or natural water resembling in composition the Vichy water proper. Called also, colloquially, Vichy.

waste liquor remaining in the process of making beet sugar, -- used in the manufacture of potassium carbonate.

ubjected to the action of sulphuric acid or of a sulphate; as, vitriolated potash, i. e., potassium sulphate.