Also found in: Thesaurus, Legal, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.


1. Having boundaries; enclosed: a closed corridor between the two buildings.
2. Blocked or barred to passage or entry: a closed port.
3. Explicitly limited; restricted: closed membership.
4. Self-contained or self-sufficient: a closed relationship.
5. Barred to the public; conducted in secrecy: a closed session of the judiciary committee.
6. Mathematics
a. Of or relating to a curve, such as a circle, having no endpoints.
b. Of or relating to a surface having no boundary curves.
c. Of or relating to an interval containing both its endpoints.
d. Characterized by or possessing the property by which an operation acting on an element in a set produces an element within the set.
7. Computers Of or relating to a file that cannot be accessed.
8. Electricity Allowing electricity to flow or pass: a closed switch.
9. Linguistics Ending in a consonant: a closed syllable.
10. Sports
a. Having the forward foot closer to the intended point of impact with the ball than the rear foot: a closed batting stance.
b. Held or swung with the top or outer edge of the striking face pointing slightly closer to the objective than the lower or inner edge: The club face was closed when it hit the ball, causing a hook.
11. Physics
a. Of or relating to a closed system.
b. Of or relating to a closed universe.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. blocked against entry; shut
2. restricted; exclusive
3. not open to question or debate
4. (Hunting) (of a hunting season, etc) close
5. (Mathematics) maths
a. (of a curve or surface) completely enclosing an area or volume
b. (of a set) having members that can be produced by a specific operation on other members of the same set: the integers are a closed set under multiplication.
6. (Phonetics & Phonology) phonetics
a. denoting a syllable that ends in a consonant
b. another word for close121
7. not open to public entry or membership: the closed society of publishing.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



1. having or forming a boundary or barrier: a closed door.
2. brought to a close; concluded: a closed incident.
3. not public; restricted; exclusive: a closed meeting.
4. not open to new ideas or arguments.
5. self-contained; independent or self-sufficient: a closed system.
6. (of a syllable) ending with a consonant. Compare open (def. 25b).
a. (of a set in which a combining operation is defined) such that performing the operation between members of the set produces a member of the set, as multiplication in the set of integers.
b. (of a function or operator) having as its graph a closed set.
c. (of a curve) not having endpoints.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


1. 'close' or 'shut'

If you close /kləʊz/ something such as a door, you move it so that it covers or fills a hole or gap.

He opened the door and closed it behind him.

You can also say that you shut something such as a door. There is no difference in meaning. The past tense and -ed participle of shut is shut.

I shut the door quietly.

Both closed and shut can be adjectives used after a linking verb.

All the other downstairs rooms are dark and the shutters are closed.
The windows were all shut.

You can use either close or shut to say that work or business stops for a short time in a shop or public building.

Many libraries close on Saturdays at 1 p.m.
What time do the shops shut?
2. 'close' or 'closed' only

Only closed can be used in front of a noun. You can talk about a closed window, but not a 'shut' window.

He listened to her voice coming faintly through the closed door.

You can say that a road, border, or airport is closed.

The border was closed without notice around midnight.

Don't say that a road, border, or airport 'is shut'.

Be Careful!
Don't confuse the verb close with the adjective close /kləʊs/. If something is close to something else, it is near to it.

Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.closed - not open or affording passage or access; "the many closed streets made travel difficult"; "our neighbors peeped from behind closed curtains"
obstructed - shut off to passage or view or hindered from action; "a partially obstructed passageway"; "an obstructed view"; "justice obstructed is not justice"
shut, unopen, closed - not open; "the door slammed shut"
sealed - closed or secured with or as if with a seal; "my lips are sealed"; "the package is still sealed"; "the premises are sealed"
open - affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks"
2.closed - (set theory) of an interval that contains both its endpoints
math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
open - (set theory) of an interval that contains neither of its endpoints
3.closed - not openclosed - not open; "the door slammed shut"  
closed - not open or affording passage or access; "the many closed streets made travel difficult"; "our neighbors peeped from behind closed curtains"
4.closed - used especially of mouth or eyes; "he sat quietly with closed eyes"; "his eyes were shut against the sunlight"
opened, open - used of mouth or eyes; "keep your eyes open"; "his mouth slightly opened"
5.closed - requiring union membership; "a closed shop"
union - of trade unions; "the union movement"; "union negotiations"; "a union-shop clause in the contract"
6.closed - with shutters closed
shuttered - provided with shutters or shutters as specified; often used in combination; "a church with a shuttered belfry and spire"; "green-shuttered cottages"
7.closed - not open to the general public; "a closed meeting"
restricted - subject to restriction or subjected to restriction; "of restricted importance"
8.closed - not having an open mindclosed - not having an open mind; "a closed mind unreceptive to new ideas"
unreceptive - not receptive
9.closed - blocked against entry; "a closed porch"
enclosed - closed in or surrounded or included within; "an enclosed porch"; "an enclosed yard"; "the enclosed check is to cover shipping and handling"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. shut, locked, sealed, fastened Her bedroom door was closed.
shut open, unlocked, ajar, unfastened, unsealed, unclosed
2. shut down, out of business, out of service The airport shop was closed.
3. exclusive, select, restricted No-one was admitted to this closed circle of elite students.
4. finished, over, ended, decided, settled, concluded, resolved, terminated I now consider the matter closed.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
đóng kín


A. ADJ (gen) → cerrado; [hearing, meeting] → a puerta cerrada
her eyes were closedtenía los ojos cerrados
sociology is a closed book to mela sociología es un misterio para mí
the case is closed (Jur) → el caso está cerrado
behind closed doors (fig) → a puerta cerrada
to have a closed mindser de miras estrechas, ser de mente cerrada
it's closed on Sundayslos domingos está cerradocierra los domingos
the road is closed to trafficla carretera está cerrada al tráfico
the door was closed to us (fig) → para nosotros las puertas estaban cerradas
B. CPD closed primary N (US) (Pol) elección primaria reservada a los miembros de un partido
closed season N (Hunting, Fishing) → veda f (Ftbl, Rugby) → temporada f de descanso (de la liga de fútbol)
closed session N (Jur) → sesión f a puerta cerrada
in closed sessionen sesión a puerta cerrada
closed shop N (Ind) empresa con todo el personal afiliado obligatoriamente a un solo sindicato
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈkləʊzd] adj
[shop] → fermé(e)
The bank's closed → La banque est fermée.
[road] → fermé(e) à la circulationclosed-circuit television [ˌkləʊzdˈsɜːrkɪt] ntélévision f en circuit fermé closed-circuit television cameraclosed-circuit television camera ncaméra f de surveillanceclose-down [ˈkləʊzdaʊn] n [shop, business] → fermeture f (définitive)closed shop n entreprise qui n'emploie que des travailleurs syndiquésclose-fisted [ˌkləʊsˈfɪstɪd] adjpingreclose-fitting [ˌkləʊsˈfɪtɪŋ] adj [clothes] → ajusté(e)close-knit [ˌkləʊsˈnɪt] adj [family, community] → très uni(e)
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


closed circuit
closed-circuit television
ninterne Fernsehanlage; (for supervision) → Fernsehüberwachungsanlage f
adj meeting, sessionhinter verschlossenen Türen


closed primary
n (US Pol) Vorwahl mit Fraktionszwang, bei der nur Mitglieder der eigenen Partei gewählt werden können
closed scholarship
closed season
nSchonzeit f
closed session
closed set
n (Math) → abgeschlossene Menge
closed shop
nClosedshop m; we have a closedwir haben Gewerkschaftszwang
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[kləʊzd] adjchiuso/a
sociology is a closed book to me → per me la sociologia è un mistero
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


مُغْلَق uzavřený lukket geschlossen κλειστός cerrado suljettu fermé zatvoren chiuso 閉まっている 닫힌 gesloten lukket zamknięty fechado замкнутый stängd ปิดไม่รับสิ่งใหม่ kapalı đóng kín 关闭的
Multilingual Translator © HarperCollins Publishers 2009


a. cerrado-a;
___ circuit televisiontelevisión en circuito ___;
___ ecological systemsistema ecológico ___.
English-Spanish Medical Dictionary © Farlex 2012
References in classic literature ?
Several other bulls, growling and barking, closed in toward the clearing, but they were all much farther from the balu and the panther than was Tarzan of the Apes, so it was that Sheeta and the ape-man reached Teeka's little one almost simultaneously; and there they stood, one upon either side of it, baring their fangs and snarling at each other over the little creature.
After two days' work, however, he succeeded in fashioning two massive hardwood hinges, and with these he hung the door so that it opened and closed easily.
The young man with his hat slouched over his eyes, still leaning on the arm of the officer, and still wiping from time to time his brow with his handkerchief, was watching in a corner of the Buytenhof, in the shade of the overhanging weather-board of a closed shop, the doings of the infuriated mob, a spectacle which seemed to draw near its catastrophe.
So impetuous was the attack of the man-ape that he found his hold before the anthropoid could prevent him--a savage hold, with strong jaws closed upon a pulsing jugular, and there he clung, with closed eyes, while his fingers sought another hold upon the shaggy throat.
The latter reached upward for the swinging rounds, and as he did so steel fingers closed upon his windpipe and a steel blade pierced the very centre of his heart.
After a while she closed upon us, until she ran quite close to me and at Raja's side.
He sat down, sank into thought, closed his eyes, and dozed off.
Having closed and secured the door on Lady Montbarry's departure, Agnes put on her dressing-gown, and, turning to her open boxes, began the business of unpacking.
There I pressed her dear form to me, and then, though it tore my heart to do it, and filled me only with the blackest shadows of terrible foreboding, I guided her across the threshold, kissed her once again, and closed the door upon her.
"I followed them and I heard them speaking beyond a closed door," replied I-Gos; "but I did not see them."
Barunda and Ninaka urged their men on, with brief rests, all day, nor did they halt even after night had closed down upon the river.
He remained silent, following her with his eyes, until she had gained her little room and closed the door; and then turning to the dwarf, said abruptly,