insulator
nounA material that insulates, especially a nonconductor of sound, heat, or electricity.
nounA device that insulates.
nounOne who or that which insulates; specifically, a substance or body that interrupts the communication of electricity or heat to surrounding objects; a non-conductor; anything through which an electric current will not pass.
nounOne who, or that which, insulates.
nounA substance or object that insulates; a nonconductor.
nounA
A
a material such as glass or porcelain with negligible electrical or thermal conductivity