insulator

Plural: insulators

Noun

• a material such as glass or porcelain with negligible electrical or thermal conductivity
• 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)
• A person who installs insulation.

Examples

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

Synonyms

dielectric, nonconductor, insulant, isolation

Antonyms

conductor

Related Words

insulant, insulate, insulation