a nonmetallic material that has a filled valence band at 0 K and a relatively wide energy band gap; consequently the room-temperature electrical conductivity is very low.
Mechanics glossary. 2013.
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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 — 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… … Wiktionary
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