Dictionary  potas'sium hydrox'ideChem. a white, deliquescent, water-soluble solid, KOH, usually in the form of lumps, sticks, or pellets, that upon solution in water generates heat: used chiefly in the manufacture of soap, as a laboratory reagent, and as a caustic. Also called caustic potash, potas'sium hy'drate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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