Breadcrumb Home > Dictionary > Index F fullerene: Meaning and Definition of Find definitions for: ful•ler•ene Pronunciation: (fool'u-rēn"), [key] any of a class of molecules of carbon having a roughly spherical shape. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fullerene (Thesaurus) fuller Fuller rose beetle ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language