/ Dictionary / Index S spherical polygon: Meaning and Definition of Find definitions for: spher'ical pol'ygon Pronunciation: [key] — Geom. Geom. a closed figure formed by arcs of great circles on a spherical surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spherical geometry spherical sailing 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