- a shutting down, as of a factory, school, or machine; a termination or suspension of operations, services, or business activity: a partial government shutdown;an emergency shutdown of a nuclear reactor.
- the closing of a factory, shop, etc
- (as modifier)
- to cease or cause to cease operation
- to close by lowering
- (of fog) to descend and envelop
- to put a stop to; clamp down on
- to reduce the power level of (a nuclear reactor) to the lowest possible value
