closed

adj.

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.
   1. Of or relating to a curve, such as a circle, having no endpoints.
   2. Of or relating to a surface having no boundary curves.
   3. Of or relating to an interval containing both its endpoints.
   4. Characterized by or possessing the property by which an operation acting on an element in a set produces an element within the set.
7. Computer Science. 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.
    1. Having the forward foot closer to the intended point of impact with the ball than the rear foot: a closed batting stance.
    2. 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. Relating to a model of the universe in which the mass of the universe is sufficient to halt its expansion, and in which its curvature resembles that of a sphere, such that an object moving in a straight line would eventually return to its starting point.

With regard to a switch, closed is "on." Open is "off." See close.

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adj

Definition: exclusive, independent
Antonyms: open, welcoming

adj

Definition: finished, terminated
Antonyms: beginning, continuing, open, started, starting, unsettled

adj

Definition: shut, out of service
Antonyms: in business, open, running, working

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A set is closed with respect to an operation if the result of applying that operation to a member of the set is itself a member of the set.

IN BRIEF: To be shut up.

The hardest thing in the world to open is a closed mind. — Unknown.

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Dansk (Danish)
adj. - lukket, afsluttet

idioms:

• behind closed doors    bag lukkede døre
• closed book    lukket bog
• closed circuit    lukket kredsløb
• closed season    fredningstid
• closed shop    virksomhed med udelukkende organiseret arbejdskraft

Nederlands (Dutch)
dicht, gesloten, besloten

Français (French)
adj. - fermé, clos, confidentiel, privé, obturé, bouché

idioms:

• behind closed doors    à huis clos, dans le privé
• closed book    rebelle à, bouché en
• closed circuit    (télévision) à circuit fermé
• closed season    fermeture de la chasse
• closed shop    industrie employant exclusivement des membres de syndicats

Deutsch (German)
adj. - zu, geschlossen, gesperrt

idioms:

• behind closed doors    hinter verschlossenen Türen
• closed book    Buch mit sieben Siegeln
• closed circuit    geschlossen
• closed season    Schonzeit
• closed shop    gewerkschaftspflichtiges Unternehmen

Ελληνική (Greek)
adj. - κλειστός, απαγορευμένος, περιορισμένης συμμετοχής, για λίγους

idioms:

• behind closed doors    κεκλεισμένων των θυρών
• closed book    θέμα για το οποίο υπάρχει πλήρης άγνοια
• closed circuit    (ηλεκτρ.) κλειστό κύκλωμα
• closed season    (ΗΠΑ) εποχή απαγόρευσης κυνηγιού
• closed shop    επιχείρηση αναγκασμένη να απασχολεί μόνο συνδικαλισμένους εργαζόμενους

Italiano (Italian)
chiuso, privato

idioms:

• behind closed doors    a porte chiuse
• closed book    materia ignota
• closed circuit    circuito chiuso
• closed season    stagione chiusa
• closed shop    azienda sindacata

Português (Portuguese)
adj. - fechado

idioms:

• behind closed doors    de portas fechadas
• closed book    enigma (m)
• closed circuit    circuito (m) fechado
• closed season    estação (f) de caça e pesca
• closed shop    estabelecimento (m) que só admite empregados sindicalizados

Русский (Russian)
закрытый

idioms:

• behind closed doors    за закрытыми дверьми
• closed book    закрытая книга
• closed circuit    замкнутая цепь
• closed season    период, в который запрещена охота
• closed shop    учреждение в котором все служащие должны принадлежат профсоюзу, закрыто не принадлежащим той или иной группе

Español (Spanish)
adj. - cerrado, exclusivo, reservado

idioms:

• behind closed doors    a puerta cerrada
• closed book    asunto concluido
• closed circuit    circuito cerrado
• closed season    veda
• closed shop    establecimiento que contrata sólo a miembros sindicados

Svenska (Swedish)
adj. - stängd, inte öppen för alla, sluten (elektr.)

中文（简体）(Chinese (Simplified))
关闭的, 限于少数人的

idioms:

• behind closed doors    与外界隔绝地, 秘密地
• closed book    难理解的事
• closed circuit    闭合电路, 闭路电视
• closed season    禁猎期
• closed shop    闭场, 封闭式作业, 关门

中文（繁體）(Chinese (Traditional))
adj. - 關閉的, 限於少數人的

idioms:

• behind closed doors    與外界隔絕地, 秘密地
• closed book    難理解的事
• closed circuit    閉合電路, 閉路電視
• closed season    禁獵期
• closed shop    閉場, 封閉式作業, 關門

한국어 (Korean)
adj. - 닫힌, 업무를 정지한, 배타적인, 순환식의

日本語 (Japanese)
adj. - 閉ざされた, 非公開の, 子音で終わる, 排他的な, 閉じた

idioms:

• behind closed doors    秘密に
• closed book    わけのわからない事, 理解しがたい人物
• closed circuit    閉回路, 閉回路テレビ
• closed season    禁猟期
• closed shop    クローズドショップ

العربيه (Arabic)
‏(صفه) مغلق, مسدود‏

עברית (Hebrew)
adj. - ‮בלעדי, סגור‬

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Closed Toe Bridal Shoes	1/8' Closed Cell Foam
Toddler Sandals Closed-toe	Closed Toe Wedge Espadrille