You searched for: “nanotube
A hollow cylindrical or toroidal molecule made of one element, usually carbon. Nanotubes are being investigated as semiconductors and for uses in nanotechnology.

A toroid is defined as a surface generated by rotating a closed curve around an axis that is in the same plane as the curve but does not intersect it.

This entry is located in the following units: nano- [NA noh], nan-, nanno-, -nania (page 5) tub- (page 1)