insulator
/ˈɪn.s(j)ə.leɪ.tə(ɹ)/ noun C2- 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) · To isolate electrical wires from the pylons supporting them, one often uses glass insulators.
- A person who installs insulation.
Plural insulators
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