a crystalline, water-insoluble powder, Al(OH)3 or Al2O3·3H2O, obtained chiefly from bauxite: used in the manufacture of glass, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.
Main Entry: aluminum hydroxide Function: noun : any of several white gelatinous or crystalline hydrates Al2O3·nH2O ofalumina; especially: one Al2O3·3H2O or Al(OH)3 used in medicine as an antacid