/ Dictionary / Index D delphinium: Meaning and Definition of Find definitions for: del•phin•i•um Pronunciation: (del-fin'ē-um), [key] — pl. -i•ums, -i•a any of numerous plants of the genus Delphinium, esp. any of various tall, cultivated species having usually blue, pink, or white flowers. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: delphinium (Thesaurus) delphinine Delphinus Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language