Dictionary
ammo'nium chlo'ride
Chem., Pharm.
a white, crystalline, water-soluble powder, NH
4Cl, which produces a cooling sensation on the tongue, used chiefly in the manufacture of dry cells, in electroplating, and in medicine as an expectorant. Also called
sal ammoniac. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.