/ Dictionary / Index L langbeinite: Meaning and Definition of Find definitions for: lang•bein•ite Pronunciation: (lang'bī-nīt", läng'-), [key] — n. a mineral, KMg(SO), occurring in marine salt deposits, used as a fertilizer because of its potassium content. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: langbeinite (Thesaurus) lang Lange Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language