/ Dictionary / Index S Stanislaus I: Meaning and Definition of Find definitions for: Stanislaus I Pronunciation: (stan'is-lus, -läs"). [key] — (Stanislaus Leszczynski) 1677–1766, king of Poland 1704–09, 1733–35. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Stanislaus Stanislav Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language