ammonia Meaning, Definition & Usage

  1. noun a water solution of ammonia
    ammonium hydroxide; ammonia water.
  2. noun a pungent gas compounded of nitrogen and hydrogen (NH3)

WordNet

Am*mo"ni*a noun
Etymology
From sal ammoniac, which was first obtaining near the temple of Jupiter Ammon, by burning camel's dung. See Ammoniac.
Definitions
  1. (Chem.) A gaseous compound of hydrogen and nitrogen, NH3, with a pungent smell and taste: -- often called volatile alkali, and spirits of hartshorn.

Webster 1913