/ Dictionary / Index S Sergiyev Posad: Meaning and Definition of Find definitions for: Ser•gi•yev Po•sad Pronunciation: (sûr'gē--uf pu-säd'), [key] a city in the NW Russian Federation in Europe, NE of Moscow. 111,000. Formerly (1930–91), Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sergius IV Seri 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