Definitions

1. noun

A person or device that protects against electric shock by preventing the flow of electric current.

“The electrician wrapped the wire with a layer of insulation to prevent short circuits.”

2. noun

A material or substance that prevents heat transfer or reduces thermal conductivity.

“The insulator in the refrigerator helps keep the cold air from escaping into the room.”

3. noun

A device or object used to prevent the flow of fluid or gas through a pipe or tube.

“The water pump’s insulator prevents water from flowing back into the tank when it’s turned off.”

4. verb

To prevent or reduce the flow of electric current or heat.

“The electrical engineer insulated the wires to prevent electrical shock.”