/ Dictionary / Index H houstonia: Meaning and Definition of Find definitions for: hous•to•ni•a Pronunciation: (h-stō'nē-u), [key] — n. any North American plant, belonging to the genus Houstonia, of the madder family, esp. H. caerulea, the common bluet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Houston Houstonian Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language