/ Dictionary / Index S strontium hydroxide: Meaning and Definition of Find definitions for: stron'tium hydrox'ide Pronunciation: [key] — Chem. Chem. a white, slightly water-soluble powder, Sr(OH), or its crystalline octahydrate: used chiefly in the refining of beet sugar. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. strontium 90 strook Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language