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shutdown

[shuht-doun] /ˈʃʌtˌdaʊn/
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
1855-1860
1855-60, Americanism; noun use of verb phrase shut down
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for shutdown

shutdown

/ˈʃʌtˌdaʊn/
noun
1.
  1. the closing of a factory, shop, etc
  2. (as modifier): shutdown costs
verb (adverb)
2.
to cease or cause to cease operation
3.
(transitive) to close by lowering
4.
(transitive) (of fog) to descend and envelop
5.
(intransitive; foll by on or upon) (informal) to put a stop to; clamp down on
6.
(transitive) 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
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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
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15
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