/ Dictionary / Index R registration: Meaning and Definition of Find definitions for: reg•is•tra•tion Pronunciation: (rej"u-strā'shun), [key] — n. the act of registering. an instance of this. an entry in a register. the group or number registered. an official act of registering one's name in the list of qualified voters. a certificate attesting to the fact that someone or something has been registered: a boat registration. the act or technique of registrating. the selection of stops made by an organist for a particular piece. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: registration (Thesaurus) registrate registry 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