/ Dictionary / Index S Sieyès: Meaning and Definition of Find definitions for: Sie•yès Pronunciation: (sye-yes'), [key] (“Abbé Sieyès”), 1748–1836, French priest and revolutionist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sieve tube Sifnos Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language