/ Dictionary / Index S sinfonietta: Meaning and Definition of Find definitions for: sin•fo•niet•ta Pronunciation: (sin"fun-yet'u, -fōn-), [key] — n. a short symphony. a small symphony orchestra, often composed solely of stringed instruments. a symphony for fewer than the usual number of instruments. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sinfonia sinful Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language