/ Dictionary / Index S syst.: Meaning and Definition of Find definitions for: syst. Pronunciation: [key] system. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. syssarcosis systaltic 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