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shutdown

[shuht-doun]
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noun
  1. 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.

Origin of shutdown

1855–60, Americanism; noun use of verb phrase shut down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for shutdown

shutdown

noun
    1. the closing of a factory, shop, etc
    2. (as modifier)shutdown costs
verb shut down (adverb)
  1. to cease or cause to cease operation
  2. (tr) to close by lowering
  3. (tr) (of fog) to descend and envelop
  4. (intr; foll by on or upon) informal to put a stop to; clamp down on
  5. (tr) to reduce the power level of (a nuclear reactor) to the lowest possible value
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for shutdown

n.

also shut-down, 1884, of factories, etc.; 1911 of machines; from shut (v.) + down (adv.).

Online Etymology Dictionary, © 2010 Douglas Harper