Meaning & use

insulators

noun·Everyday

Last updated

Materials or devices that do not conduct electricity, heat, or sound, and are used to prevent its transfer.

See it in a sentence

Rubber and glass are common electrical insulators.

The attic was packed with foam insulators to keep the house warm.

A note on using this word

Used across physics, construction, and electrical engineering to describe materials that resist the flow of energy.

Words with a similar meaning

nonconductors

Choose a synonym to suit the sentence. Meanings can overlap without being identical.

Words with an opposite meaning

conductors

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