/ Dictionary / Index S supertanker: Meaning and Definition of Find definitions for: su•per•tank•er Pronunciation: (s'pur-tang"kur), [key] — n. a tanker with a deadweight capacity of over 75,000 tons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supertanker (Thesaurus) supersymmetry supertask Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language