/ Dictionary / Index O ophiuroid: Meaning and Definition of Find definitions for: oph•i•ur•oid Pronunciation: (of"ē-yoor'oid, ō"fē-), [key] — n. any echinoderm of the subclass Ophiuroidea, including brittle stars, basket stars, and others, characterized by elongate arms radiating from the disk. —adj. of or pertaining to the subclass Ophiuroidea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ophiuchus ophthal. 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