Definitions for "Nonconductor"
A substance which does not conduct, that is, convey or transmit, heat, electricity, sound, vibration, or the like, or which transmits them with difficulty; an insulator; as, wool is a nonconductor of heat; glass and dry wood are nonconductors of electricity.
1. A material that does not conduct electricity. 2. A material that is resistant to the conduction of heat.
Any material that transmits or conducts electrical current very poorly.