insulation

Etymology

insulate + -ion

noun

1. The act of insulating; detachment from other objects; isolation.
   Reindeer are well suited to the taiga’s frigid winters. They can maintain a thermogradient between body core and the environment of up to 100 degrees, in part because of insulation provided by their fur, and in part because of counter-current vascular heat exchange systems in their legs and nasal passages. 2013-03, Nancy Langston, “Mining the Boreal North”, in American Scientist, volume 101, number 2, archived from the original on 2016-04-13, page 98
2. The state of being insulated; detachment from other objects; isolation.
3. Any of a variety of materials designed to reduce the flow of heat, either from or into a building.
4. (engineering) The act of separating a body from others by nonconductors, so as to prevent the transfer of electricity, heat, or sound
5. (engineering) The state of a body so separated.
6. (electricity) a medium in which it is possible to maintain an electrical field with little supply of energy from additional sources.