supermolecule

/ˈsupərˌmɑləkjuːl/
noun
  1. A large, complex molecule made up of many smaller molecules or atoms bonded together.
    • Scientists are studying a supermolecule that could store hydrogen for clean energy.
    • Each supermolecule in the crystal contains hundreds of carbon atoms arranged in a ring.
    • The new material is built from a supermolecule that mimics natural spider silk.