/ Dictionary / Index S synastry: Meaning and Definition of Find definitions for: syn•as•try Pronunciation: (si-nas'trē, sin'u-strē), [key] — n. Astrol. the comparison of two or more natal charts in order to analyze or forecast the interaction of the individuals involved. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. synarthrosis synaxarion Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language