buck·min·ster·ful·ler·ene 
(bŭk′mĭn-stər-flə-rēn′)
(bŭk′mĭn-stər-flə-rēn′)n.
An extremely stable, ball-shaped carbon molecule, C60, reminiscent of a geodesic dome, and believed to occur naturally in soot. It was the first fullerene to be discovered. Also called buckyball.
[After Richard Buckminster Fuller.]