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A physical condition in which the effects of a toxic substance exposure cause a reduction or dulling in consciousness, similar to an anesthetic effect.

National Electrical Code (NEC) A code for the design and installation of electrical wiring and devices to safeguard life and property from fires. The original national electrical code was developed in 1897. It is currently issued as National Fire Protection Association (NFPA) 70, National Electrical Code (NEC).