Adjacent Words

Insulator definitions

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Webster's 1828 Dictionary

IN'SULATOR, n. In electrical experiments, the substance or body that insulates, or interrupts the communication of electricity to surrounding objects; a non-conductor or electric.

WordNet (r) 3.0 (2005)

n
1: a material such as glass or porcelain with negligible electrical or thermal conductivity [syn: insulator, dielectric, nonconductor] [ant: conductor]

Merriam Webster's

noun Date: 1801 one that insulates: as a. a material that is a poor conductor (as of electricity or heat) — compare semiconductor b. a device made of an electrical insulating material and used for separating or supporting conductors

Oxford Reference Dictionary

n. 1 a thing or substance used for insulation against electricity, heat, or sound. 2 an insulating device to support telegraph wires etc. 3 a device preventing contact between electrical conductors.

Webster's 1913 Dictionary

Insulator In"su*la`tor, n. 1. One who, or that which, insulates. 2. (Elec. & Thermotics) The substance or body that insulates; a nonconductor.

Collin's Cobuild Dictionary

(insulators) An insulator is a material that insulates something. Fat is an excellent insulator against the cold. N-COUNT: usu sing

Soule's Dictionary of English Synonyms

n. (Phys.) Non-conductor.