\ ˈklōzd How to pronounce closed (audio) \

Definition of closed

1a : not open
b : enclosed
c : composed entirely of closed tubes or vessels a closed circulatory system
2a : having the skin intact with no underlying tissue exposed closed wounds — see also closed fracture
b of a head injury : having the skull intact : not marked by fracture or penetration of the skull
3a : forming a self-contained unit allowing no additions closed association
b(1) : traced by a moving point that returns to an arbitrary starting point closed curve also : so formed that every plane section is a closed curve closed surface
(2) : characterized by mathematical elements that when subjected to an operation produce only elements of the same set the set of whole numbers is closed under addition and multiplication
(3) : containing all the limit points of every possible subset a closed interval contains its endpoints
c : characterized by continuous return and reuse of the working substance a closed cooling system
d of a racecourse : having the same starting and finishing point
4a : confined to a few closed membership
b : excluding participation of outsiders or witnesses : conducted in strict secrecy
c : rigidly excluding outside influence a closed mind
5 : ending in a consonant closed syllable

Examples of closed in a Sentence

He looked at me through half-closed eyes. The store is closed for lunch between 1 and 2 p.m. The beach is closed this time of night. These restrooms are closed for cleaning. The chairman declared the discussion closed and allowed no further speeches.
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Recent Examples on the Web When the pandemic hit, your toddler’s day care closed and your elementary school-age child switched to learning from home. Nerd Wallet, oregonlive, 15 Oct. 2021 A year ago, most schools were closed and many people were still at home. Los Angeles Times, 15 Oct. 2021 That farm has since closed, and the deer were shipped back to Wisconsin in 2019. From Usa Today Network And Wire Reports, USA TODAY, 13 Oct. 2021 People opposing Apple’s closed App Store ecosystem often argue in favor of lower fees, third-party payments support, third-party app stores, and sideloading. Chris Smith, BGR, 13 Oct. 2021 Scordino last year helped develop the online hospital status dashboard that shows which facilities are open or closed. Zaz Hollander, Anchorage Daily News, 10 Oct. 2021 Here’s what’s open and closed on Columbus Day, which is also recognized as Indigenous Peoples’ Day in other locations. Cameron Fields, cleveland, 8 Oct. 2021 What travelers need to enter Chile After reopening its borders to international travel in November 2020, Chile re-closed to nonessential travel in April 2021 due to rising Covid-19 cases. Johanna Read, Forbes, 1 Oct. 2021 Eastbound Americana Boulevard between south Texas Avenue and San Antonio Avenue is temporarily closed, according to Orange County Sheriff’s Office. Joe Mario Pedersen,, 23 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'closed.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of closed

13th century, in the meaning defined at sense 1a

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Time Traveler for closed

Time Traveler

The first known use of closed was in the 13th century

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Dictionary Entries Near closed



closed account

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Last Updated

21 Oct 2021

Cite this Entry

“Closed.” Dictionary, Merriam-Webster, Accessed 26 Oct. 2021.

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More Definitions for closed



English Language Learners Definition of closed

: covering an opening : having an opening that is covered
: not operating or open to the public
: having ended : not being worked on anymore


\ ˈklōzd How to pronounce closed (audio) \

Kids Definition of closed

: not open a closed door


\ ˈklōzd How to pronounce closed (audio) \

Medical Definition of closed

1 : being a complete self-contained system with nothing transferred in or out a closed thermodynamic system
2a : having the skin intact with no underlying tissue exposed closed wounds — see closed fracture
b of a head injury : having the skull intact : not marked by fracture or penetration of the skull Closed head injuries result from the force of a blast or a blow in which the skull remains intact but the brain, surrounded by fluid like an egg yolk, gets wrenched or slammed against the skull wall.— Neil Shea
3 : not discharging pathogenic organisms to the outside a case of closed tuberculosis — compare open entry 1 sense 2

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Legal Definition of closed

1 : confined to a few closed membership
2 : excluding outsiders or witnesses : conducted in secrecy closed hearings


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