/ Dictionary / Index U usurpation: Meaning and Definition of Find definitions for: u•sur•pa•tion Pronunciation: (y"sur-pā'shun, -zur-), [key] — n. an act of usurping; wrongful or illegal encroachment, infringement, or seizure. illegal seizure and occupation of a throne. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: usurpation (Thesaurus) usurp usury Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language