/ Dictionary / Index S supernatant: Meaning and Definition of Find definitions for: su•per•na•tant Pronunciation: (s"pur-nāt'nt), [key] — adj. floating above or on the surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supernatant (Thesaurus) supernal supernational Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language