Meaning of insulator in English | Powered by Free Dictionary API

noun

• A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).

• A non-conductive structure, coating or device that does not transmit sound, heat or electricity (see image)

  Example: To isolate electrical wires from the pylons supporting them, one often uses glass insulators.

• A person who installs insulation.