/ Dictionary / Index R registry office: Meaning and Definition of Find definitions for: reg'istry of"fice Pronunciation: [key] — Brit. Brit. a government office and depository in which records and civil registers are kept and civil marriages performed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. registry regius Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language