multiwall

/ˌmʌltiˈwɔl/
adjective
  1. Having or consisting of multiple layers or walls, especially for strength or insulation.
    • They installed multiwall polycarbonate sheets for the greenhouse roof.
    • Multiwall carbon nanotubes are stronger than single-wall ones.
    • The package uses multiwall paper bags to keep the cement dry.
Synonyms
What does "multiwall" mean? | whatsthatwordmean | whatsthatwordmean