noun /ˈɪn.sjə.leɪ.tə(r)/
a) A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).

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

b) A non-conductive structure, coating or device that does not transmit sound, heat or electricity (see image)
Syn: insulant, isolation
See Also: insulant, insulate, insulation

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  • Insulator — may refer to:* Insulator (genetics) * Insulator (electrical) * Thermal insulation * Building insulation * Mott insulator See also * Insulation …   Wikipedia

  • Insulator — In su*la tor, n. 1. One who, or that which, insulates. [1913 Webster] 2. (Elec. & Thermotics) A substance or object that insulates; a nonconductor; as, polyurethane foam is a popular thermal insulator. [1913 Webster +PJC] …   The Collaborative International Dictionary of English

  • insulator — index bulwark Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • insulator — 1801, agent noun in Latin form from INSULATE (Cf. insulate) …   Etymology dictionary

  • insulator — [in′sə lāt΄ər; in′soolāt΄ər, in′syoolāt΄ər] n. anything that insulates; specif., a) a nonconductor of electricity, heat, or sound b) a device, as of glass or porcelain, for insulating and supporting electric wires …   English World dictionary

  • insulator — /in seuh lay teuhr, ins yeuh /, n. 1. Elect. a. a material of such low conductivity that the flow of current through it is negligible. b. insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor… …   Universalium

  • insulator — [[t]ɪ̱nsjʊleɪtə(r), AM sə [/t]] insulators N COUNT: usu sing An insulator is a material that insulates something. Fat is an excellent insulator against the cold …   English dictionary

  • insulator — UK [ˈɪnsjʊˌleɪtə(r)] / US [ˈɪnsəˌleɪtər] / US [ˈɪnsjəˌleɪtər] noun [countable] Word forms insulator : singular insulator plural insulators a substance that reduces the amount of heat, cold, noise, or electricity that can pass through something …   English dictionary

  • insulator — A unit made of a material that will not conduct electricity. The electricity in a copper wire covered with a plastic sleeve (insulator) cannot penetrate the sleeve. Also see spark plug insulator …   Dictionary of automotive terms

  • insulator — in|su|la|tor [ˈınsjuleıtə US ˈınsəleıtər] n a material or object which does not allow electricity, heat, or sound to pass through it ≠ ↑conductor ▪ Wood is an excellent insulator …   Dictionary of contemporary English

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