insulate

verb (used with object), in·su·lat·ed, in·su·lat·ing.

1. to cover, line, or separate with a material that prevents or reduces the passage, transfer, or leakage of heat, electricity, or sound: to insulate an electric wire with a rubber sheath; to insulate a coat with down.
2. to place in an isolated situation or condition; segregate.

verb (tr)

1. to prevent or reduce the transmission of electricity, heat, or sound to or from (a body, device, or region) by surrounding with a nonconducting material
2. to isolate or detach