nanotube
Technical term for a cylindrical nanostructure, most commonly a carbon nanotube. Used in materials science and nanotechnology contexts.
カーボンナノチューブは非常に強い素材です。
Carbon nanotubes are extremely strong materials.
Loanword from English 'nanotube', combining 'nano-' (from Greek 'nanos', dwarf) and 'tube'.