closure

noun

clo·​sure ˈklō-zhər 

1

: an act of closing : the condition of being closed

closure of the eyelids

business closures

the closure of the factory

2

: an often comforting or satisfying sense of finality

victims needing closure

also : something (such as a satisfying ending) that provides such a sense

3

: something that closes

pocket with zipper closure

child-resistant closures

4

[translation of French clôture] : cloture

5

: the property that a number system or a set has when it is mathematically closed under an operation

6

: a set that consists of a given set together with all the limit points of that set

7

archaic : means of enclosing : enclosure

Synonyms of closure

• cessation
• ending
• halt
• end
• close
• conclusion
• shutdown

Examples of closure in a Sentence

The government forced the closure of the factory.

I need to talk to him and get some closure on this issue.

Going to the memorial service for his late wife made it possible for him to achieve closure.

We all felt a sense of closure after our sister's murderer was sent to jail.

trying to bring closure to the victim's family

Recent Examples on the Web

School officials said the team couldn't return home to Grand Junction due to weather conditions, causing pass closures on Saturday night. —Christa Swanson, CBS News, 7 Dec. 2025

The set includes 12 metal holders that are wrapped in silicone and feature a snap closure for a snug fit snug. —Alicia Geigel, Southern Living, 7 Dec. 2025

There is a road closure on I-35 from MO-1/Antioch Road/Exit 8 to North Chouteau Trafficway/Exit 9. —Kansas City Star, 7 Dec. 2025

Motorists and residents also can expect lane shifts, traffic controls, intersection closures, construction noise and no street parking during the work, officials said. —Don Sweeney, Sacbee.com, 7 Dec. 2025

Word History

Etymology

Middle English, from Anglo-French, from Latin clausura, from clausus, past participle of claudere to close — more at close

First Known Use

15th century, in the meaning defined at sense 7

Rhymes for closure

• crozier
• hosier
• mosher
• composure
• cynosure
• disclosure
• enclosure
• exposure
• foreclosure
• inclosure
• nondisclosure
• postexposure

Kids Definition

closure

noun

clo·​sure ˈklō-zhər 

1

a

: an act of closing

b

: the condition of being closed

2

: something that closes

a pocket with zipper closure

3

: the property of being closed under a mathematical operation

the set of whole numbers does not have closure under division

Medical Definition

closure

noun

clo·​sure ˈklō-zhər 

1

a

: an act of closing up or condition of being closed up

closure of the eyelids

early closure of fontanels and sutures

—W. A. D. Anderson

b

: a drawing together of edges or parts to form a united integument

wound closure by suture immediately after laceration

2

: a cap, lid, or stopper for sealing a container (as a serum vial)

3

: the perception of incomplete figures or situations as though complete by ignoring the missing parts or by compensating for them by projection based on past experience

4

: an often comforting or satisfying sense of finality

therapy brought closure to the victim's family