closed
adjective
\ ˈklōzd
\
\
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
Behind closed doors, while the outside world buzzed about the Hokies, Fuente called an emergency team meeting to address the attrition. — Ross Dellenger, SI.com, "Inside Virginia Tech's Internal Turnaround After a Season of Division and Negativity," 15 Aug. 2019 Harrison reported to the Lions for the start of training camp, but has been largely an observer during practices, working out with trainers behind closed doors. — Dave Birkett, Detroit Free Press, "Detroit Lions take Damon Harrison off non-football injury list; DT returns to practice," 15 Aug. 2019 The building was quiet, music and voices muffled behind so many closed doors. — Thomas Curwen, Los Angeles Times, "After 18 months reporting on the homeless crisis, this is what I learned," 15 Aug. 2019 Such cases are often handled behind closed doors, but in this instance the defendants have decided to not settle quietly. — Claire Zillman, Fortune, "Founders, CEOs, and Moms: The Broadsheet," 14 Aug. 2019 Food safety advocates have slammed the USDA for making such decisions behind closed doors, without public input. — Suzy Khimm, NBC News, "Tyson wants fewer government inspectors in one of its beef plants. Food safety advocates are raising alarms.," 14 Aug. 2019 Large homes may need extra smoke detectors, according to the NFPA website, because closed doors may slow the spread of smoke, heat and fire. — Olivia Sanchez, USA TODAY, "Not enough smoke detectors in Pennsylvania day care where 5 children died, officials say," 13 Aug. 2019 But even if there were clear regulations governing all biohacking activities, there would be no straightforward way to stop people from pursuing them behind closed doors. — Sigal Samuel, Vox, "Is it time to regulate biohacking? California thinks so.," 13 Aug. 2019 Can what's going on behind the closed doors of the rich possibly be as entertaining as what Jesse Armstrong [the show's creator] imagines is going on? — Julie Kosin, Harper's BAZAAR, "In Season 2, Succession Is Sarah Snook's Show," 12 Aug. 2019These 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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More Definitions for closed
closed
adjective
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
See the full definition for closed in the English Language Learners Dictionary
closed
adjective
\ ˈklōzd
\
\
Kids Definition of closed
: not open
a closed door
closed
adjective
\ ˈklōzd
\
\
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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closed
adjectiveLegal Definition of closed
1
: confined to a few
closed membership
2
: excluding outsiders or witnesses : conducted in secrecy
closed hearings
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