noun Chemistry, Pharmacology.
- a white, crystalline, water-soluble powder, NH4Cl, which produces a cooling sensation on the tongue, used chiefly in the manufacture of dry cells, in electroplating, and in medicine as an expectorant.
- a white soluble crystalline solid used chiefly as an electrolyte in dry batteries and as a mordant and soldering flux. Formula: NH 4 ClAlso called: sal ammoniac
- A white crystalline compound used in dry cells, as a soldering flux, and as an expectorant. Also called sal ammoniac. Chemical formula: NH4Cl.