/ Dictionary / Index T twelve: Meaning and Definition of Find definitions for: twelve Pronunciation: (twelv), [key] — n. a cardinal number, 10 plus 2. a symbol for this number, as 12 or XII. a set of this many persons or things. the 12 apostles chosen by Christ. —adj. amounting to 12 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: twelve (Thesaurus) Twelfthtide twelvefold Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language