nanotube

/ (ˈnænəʊˌtjuːb) /

noun

a cylindrical nanoparticle, esp a carbon molecule

Scientific definitions for nanotube

nanotube
[ nănə-tōōb′ ]

A hollow cylindrical or toroidal molecule made of one element, usually carbon. Nanotubes are being investigated as semiconductors and for uses in nanotechnology. See also fullerene.