/ Dictionary / Index S supercoil: Meaning and Definition of Find definitions for: su•per•coil Pronunciation: (s'pur-koil"), [key] — n. Biochem. superhelix. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. supercluster supercolumnar 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