Carbon Allotrope Informally Called a Buckyball

This page is the CodyCross answer for the clue below from Fantasy World , Group 872, Puzzle 1 (Arduous Quest).

Question is: Carbon Allotrope Informally Called a Buckyball

and the answer is: FULLERENE

Word Meaning:

FULLERENE — (inorganic chemistry) Any of a class of allotropes of carbon having hollow molecules whose atoms lie at the vertices of a polyhedron having 12 pentagonal and 2 or more hexagonal faces.

Definitions from Wiktionary.