buckminsterfullerene

This term refers to a specific allotrope of carbon, often abbreviated as C60. It is a highly technical term used primarily in chemistry, physics, and materials science. Because it describes a specific molecular structure, it is used in a precise scientific register rather than in general conversation.

As a chemical entity and a specific type of molecule, it is treated as an uncountable noun when referring to the substance in general. While one can technically refer to a single molecule of buckminsterfullerene, the term typically describes the material or the chemical species itself.