/ Dictionary / Index S sandstone: Meaning and Definition of Find definitions for: sand•stone Pronunciation: (sand'stōn"), [key] — n. a common sedimentary rock consisting of sand, usually quartz, cemented together by various substances, as silica, calcium carbonate, iron oxide, or clay. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sandstone (Thesaurus) sand stargazer sandstorm Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language