noun

• The act of insulating; detachment from other objects; isolation.
• The state of being insulated; detachment from other objects; isolation.
• Any of a variety of materials designed to reduce the flow of heat, either from or into a building.
• (engineering) The act of separating a body from others by nonconductors, so as to prevent the transfer of electricity, heat, or sound
• (engineering) The state of a body so separated.
• (electricity) a medium in which it is possible to maintain an electrical field with little supply of energy from additional sources.