/ Dictionary / Index S sinistration: Meaning and Definition of Find definitions for: sin•is•tra•tion Pronunciation: (sin"u-strā'shun), [key] — n. the quality or state of being left-handed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sinistrality sinistro- Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language