/ Dictionary / Index D dahlia: Meaning and Definition of Find definitions for: dahl•ia Pronunciation: (dal'yu, däl'- or, esp. Brit., dāl'-), [key] — n. any composite plant of the genus Dahlia, native to Mexico and Central America and widely cultivated for its showy, variously colored flower heads. the flower or tuberous root of a dahlia. a pale violet or amethyst color. —adj. of the color dahlia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dahlia (Thesaurus) Dahlgren Dahna Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language