¦bəkˌminstərˌfu̇ləˈrēn noun
Etymology: R. Buckminster Fuller died 1983 American engineer + English -ene ; from the resemblance of its molecules to the geodesic domes designed by Fuller
: a spherical fullerene C 60 that is an extremely stable form of pure carbon, consists of interconnected pentagons and hexagons suggestive of the geometry of a geodesic dome, and is believed to be a major constituent of soot