(organic chemistry) Any dipolar organic compound of general formula R₃N⁺-C⁻R₂

(organic chemistry) An amine imide.

(chemistry) Any ammonium salt of a phosphorylated glyceride; normally manufactured from rapeseed oil, it is used as a food additive especially in chocolate.

(inorganic chemistry) A saturated solution of ammonia in water; ammonium hydroxide 28% (w/w as ammonia).

(inorganic chemistry) Pure ammonia cooled or condensed to the liquid state. / (informal, inorganic chemistry) An aqueous solution of ammonia.

(inorganic chemistry) The ionic base, NH₄⁺OH⁻, obtained by dissolving ammonia in water.

(inorganic chemistry) The ammonium salt of carbonic acid, (NH₄)₂CO₃; a white powder, smelling of ammonia, used in the preparation of smelling salts and baking powder.

(inorganic chemistry) A water-soluble salt of ammonia and hydrochloric acid, having the formula NH₄Cl.

(mineralogy) a rare mineral composed of ammonium chloride found around volcanic fumaroles and guano deposits. / (chemistry, archaic) ammonium chloride.

plural of quaternary ammonium compound