/ Dictionary / Index B boltonia: Meaning and Definition of Find definitions for: bol•to•ni•a Pronunciation: (bōl-tō'nē-u), [key] — n. any of several composite plants of the genus Boltonia, of the U.S., having blue, purple, or white asterlike flower heads. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: boltonia (Thesaurus) Bolton boltrope 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