/ Dictionary / Index A archdukedom: Meaning and Definition of Find definitions for: arch•duke•dom Pronunciation: (ärch'dk'dum, -dyk'-), [key] — n. an archduchy. the office or rank of an archduke. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. archduke arche- Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language