/ Dictionary / Index O ottrelite: Meaning and Definition of Find definitions for: ot•tre•lite Pronunciation: (o'tru-līt"), [key] — n. Mineral. a brittle mica containing manganese and similar to margarite in physical and chemical properties. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. otto of roses Ottumwa Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language