/ Dictionary / Index T tyrannicide: Meaning and Definition of Find definitions for: ty•ran•ni•cide Pronunciation: (ti-ran'u-sīd", tī-), [key] — n. the act of killing a tyrant. a person who kills a tyrant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tyrannicide (Thesaurus) tyrannical tyrannize Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language