[ shuht-doun ]
See synonyms for shutdown on
  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

Words Nearby shutdown Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use shutdown in a sentence

British Dictionary definitions for shutdown


/ (ˈʃʌtˌdaʊn) /

    • the closing of a factory, shop, etc

    • (as modifier): shutdown costs

verbshut down (adverb)
  1. to cease or cause to cease operation

  2. (tr) to close by lowering

  1. (tr) (of fog) to descend and envelop

  2. (intr; foll by on or upon) informal to put a stop to; clamp down on

  3. (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

Other Idioms and Phrases with shutdown


See close down, def. 1.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.