An allotrope of carbon having a hollow molecule consisting of 60 atoms arranged in 12 pentagonal and 20 hexagonal faces to form a truncated icosahedron
English
ˌbʌkmɪnstəˈfʊləriːn
(buhk-min-ster-FOAL-er-reen)
buckminsterfullerene
The nearly straight-line configuration of three celestial bodies in a gravitational system