/ Dictionary / Index C certificate of registry: Meaning and Definition of Find definitions for: certif'icate of reg'istry Pronunciation: [key] — Naut. Naut. a document issued to a U.S. vessel engaged in foreign trade, stating its name, nationality, ownership, etc., and claiming for it all privileges pertaining to U.S. nationality. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. certificate of origin certificate of stock Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language