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insulation

/ˌɪn.səˈleɪ.ʃən/  ·  say it: in·suh·LAY·shuhn

material that keeps heat, cold, or sound out

In Architecture & Design

In more detail

1. (noun) material used to prevent heat, cold, or sound from passing in or out of something

2. (noun) the action or process of insulating something

Examples

• The attic insulation keeps the house warm in winter and cool in summer.
• Proper insulation of the pipes prevents them from freezing.

Nearby in Architecture & Design

foyer, foundation, girder, joist, keystone, lintel