/ Dictionary / Index U unctuarium: Meaning and Definition of Find definitions for: unc•tu•ar•i•um Pronunciation: (ungk"ch-âr'ē-um), [key] — pl. -ar•i•a alipterion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unction unctuous Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language