What is the term used for a material that does not transmit electricity?

The term used for a material that does not transmit electricity is "insulator." Insulators are substances like rubber, glass, and plastic that prevent the flow of electric current. This property is crucial in various applications, especially in electrical wiring and devices, where it is essential to ensure that electricity does not leak and that safety is maintained.

Insulators have high resistance to electric current, which distinguishes them from conductors, materials that easily allow the flow of electricity, such as metals. Nonconductors is a broader term that can be synonymous with insulators, but insulator is the more widely used term within the context of electrical applications. Transmitter typically refers to devices or systems that send information or signals, which is not relevant in the context of electrical conductivity. Thus, insulator is the precise term to describe a material that does not transmit electricity effectively.