insulator.
A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).
Meaning & usage
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.
Where this word comes from
From insulate + -or.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.