/ Dictionary / Index S sine die: Meaning and Definition of Find definitions for: si•ne di•e Pronunciation: (sī'nē dī'ē, sin'ā-dē'ā Lat. si'ne dē'e), [key] without fixing a day for future action or meeting: The assembly adjourned sine die. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sine curve Sinemet 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