/ Dictionary / Index A archt.: Meaning and Definition of Find definitions for: archt. Pronunciation: [key] architect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arch support archway Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language