- The definition of insulation is material used to trap air and sound.
Fiberglass put into the walls of a house and into the attic in order to keep warm air in and cold air out during the winter months is an example of insulation.
A man installs insulation in a building.
insulation definition by Webster's New World
- an insulating or being insulated
- any material used to insulate
insulation definition by American Heritage Dictionary
- The act of insulating or the state of being insulated.
- A material or substance used in insulating: soundproof cork insulation; a layer of trapped air that serves as insulation.
insulation - Computer Definition
The dielectric material that surrounds a metal conductor and prevents it from touching another conductor or the ground and, thereby, shorting the circuit. Insulation typically is made of some sort of plastic material. Inside wire and cable standards vary according to the applications, but generally favor insulation that is characterized as low flame-spread, low-smoke, and low-toxicity.