/ Dictionary / Index S sinistrality: Meaning and Definition of Find definitions for: sin•is•tral•i•ty Pronunciation: (sin"u-stral'i-tē), [key] — n. the state or quality of having the left side or its parts or members different from and, usually, more efficient than the right side or its parts or members; left-handedness. preference for using the left hand or side. the state of being sinistral. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sinistrality (Thesaurus) sinistral sinistration Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language