/ Dictionary / Index O oxycalcium: Meaning and Definition of Find definitions for: ox•y•cal•ci•um Pronunciation: (ok"si-kal'sē-um), [key] — adj. pertaining to or produced by oxygen and calcium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oxybenzene oxycalcium light Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language