/ Dictionary / Index B baptistry: Meaning and Definition of Find definitions for: bap•tist•ry Pronunciation: (bap'tu-strē), [key] — pl. -ries. baptistery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: baptistry (Thesaurus) baptistery baptize Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language