/ Dictionary / Index A acidanthera: Meaning and Definition of Find definitions for: ac•i•dan•the•ra Pronunciation: (as"i-dan'thur-u), [key] — n. any bulbous African plant belonging to the genus Acidanthera, of the iris family, having sword-shaped leaves and long tubular flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acid anhydride acid cell Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language