NOR gate

WordReference Random House Unabridged Dictionary of American English © 2025

NOR′ gate′, 

1. Computing See NOR circuit. 

• 1965–70

WordReference Random House Unabridged Dictionary of American English © 2025

NOR′ cir′cuit  (nôr), 

1. Computing a circuit that is energized only when none of its inputs are energized. Also called NOR gate. 

• 1955–60

Collins Concise English Dictionary © HarperCollins Publishers::

NOR circuit, NOR gate / nɔː/ noun

1. a logic circuit having two or more input wires and one output wire that has a high-voltage output signal only if all input signals are at a low voltage
   Compare AND circuit

Etymology: 20th Century: from nor, so named because the action performed is similar to the operation of the conjunction nor in logic