Insulator

usgb/ˈɪnsəleɪtər/
noun

A material or object that does not let heat, electricity, or sound pass through it.

Rubber gloves are a good insulator to protect your hands while handling electrical wires.
Visual representation of "insulator" - A material or object that does not let heat, electricity, or sound pass through it

Often appears as...

  • electrical insulator
  • thermal insulator

Usage tips

Technical

Definition 1 of 2
Visual representation of "insulator"
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Types of Insulators

Insulators can be classified by what they resist such as heat, electricity, or sound.

Illustration for Types of Insulators
Glass wool is a popular thermal insulator in buildings.
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Insulator Materials

Common insulating materials include rubber, plastic, glass, and wood.

Illustration for Insulator Materials
The plastic coating on wires acts as an electrical insulator.
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Insulation Effectiveness

The effectiveness of an insulator is measured by its ability to resist the transfer of a particular form of energy.

Illustration for Insulation Effectiveness
A double glazed window is a more effective sound insulator than a single pane.
Visual representation of the word "Insulator"

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