1. to cover or surround with material that prevents the passage of heat, electricity, or sound
2. to protect or separate from harmful or unpleasant influences

Examples

• We need to insulate the attic to reduce heating costs.
• The wires are insulated with rubber coating.
• Double-pane windows help insulate the house from noise.
• Parents try to insulate their children from violence on television.
• The foam padding will insulate the package during shipping.
• Wealthy families often insulate themselves from economic hardship.
• The thick walls insulate the building from outside temperature changes.