/ Dictionary / Index A alcyonarian: Meaning and Definition of Find definitions for: al•cy•o•nar•i•an Pronunciation: (al"sē-u-nâr'ē-un), [key] — n. any anthozoan coelenterate of the subclass Alcyonaria, as corals and sea anemones, having the tentacles and other body parts in branches or segments of eight. —adj. belonging or pertaining to the Alcyonaria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Alcuin Alcyone 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