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(1) To engage a file for reading and writing. The open procedure "locks on" to an existing file. Very often, the term "open" is used to mean "open and run," in which case if the file is a script of some type, it will be executed, not just opened for examination. In some cases, the difference can be critical. Opening a batch file to view its contents is harmless, whereas opening a batch file and running it causes actions to be taken. Contrast with close.

(2) With regard to a switch, open is "off." See switch.

(3) Made to operate with other products. See open architecture, open system and open source.

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Banking: to establish an account or a letter of credit .


Finance: unpaid balance of an account.


Securities: status of an order to buy or sell securities that has still not been executed; good - till - canceled order .
See also open order.


Computers: call a file up from disk in order to work on it. You create a new file and open a saved one.

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adjective

1. Free from obstructions: clear, free, unblocked, unimpeded, unobstructed. See open/close.
2. Having no protecting or concealing cover: exposed, uncovered, unprotected. See protection/exposure.
3. Not restricted or confined to few: open-door, public, unrestricted. See open/close.
4. Tending to incur: liable, prone, subject, susceptible, susceptive, vulnerable. See likely/unlikely.
5. Ready and willing to receive favorably, as new ideas: acceptant, amenable, open-minded, receptive, responsive. See accept/reject.
6. Available for use: accessible, employable, operable, operative, practicable, usable, utilizable. See possible/impossible.
7. Not spoken for or occupied: free, uninhabited, unoccupied, unreserved. See owned/unowned.
8. Marked by lack of firm decision or commitment; of questionable outcome: indefinite, uncertain, undecided, undetermined, unresolved, unsettled, unsure, vague. Idioms: up in the air. See certain/uncertain.
9. Manifesting honesty and directness, especially in speech: candid, direct, downright, forthright, frank, honest, ingenuous, man-to-man, plainspoken, straight, straightforward, straight-out, unreserved. Informal straight-from-the-shoulder, straight-shooting. See clear/unclear, show/hide.

verb

1. To become or cause to become open: unclose, undo. See open/close.
2. To rid of obstructions: clear, free, unblock. See open/close.
3. To move or arrange so as to cover a larger area. expand, extend, fan¹ (out), outstretch, spread, stretch, unfold, unroll. See move/halt.
4. To go about the initial step in doing (something): approach, begin, commence, embark, enter, get off, inaugurate, initiate, institute, launch, lead off, set about, set out, set to, start, take on, take up, undertake. Informal kick off. Idioms: get cracking, get going, get the show on the road. See start/end.

Idioms beginning with open:
open and aboveboard
open and shut
open fire
open house, keep
open mind
open one's eyes
open one's heart to
open question
open season on
open secret
open the door to
open with

See also keep a weather eye (open); keep one's eyes open; lay open; leave open; leave the door open; not open one's mouth; out in the open; throw open; wide open; with one's eyes open; with open arms.

adj

Definition: accessible; not forbidden
Antonyms: blocked, closed, forbidden, inaccessible, obstructed, private, shut, unavailable

adj

Definition: clear, obvious
Antonyms: ambiguous, closed, deceitful, unclear, vague

adj

Definition: honest, objective
Antonyms: deceitful, deceptive, devious, dishonest, lying, secretive, shifty, subjective

adj

Definition: undecided
Antonyms: certain, concluded, decided, definite, sure

adj

Definition: unfastened, unclosed
Antonyms: closed, fastened, locked, shut

v

Definition: begin
Antonyms: close, conclude, end, finish, shut

v

Definition: clear, breach, expose; spread
Antonyms: block, bury, close, cover, exclude, fold up, hide, hinder, shut

Abbreviation for ‘open (or left) parenthesis’ — used when necessary to eliminate oral ambiguity. To read aloud the LISP form (DEFUN FOO (X) (PLUS X 1)) one might say: “Open defun foo, open eks close, open, plus eks one, close close.”

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This entry contains information applicable to United States law only.

To make accessible, visible, or available; to submit to review, examination, or inquiry through the elimination of restrictions or impediments.

To open a judgment means to render it capable of reexamination by removing or relaxing the bar of its finality. A judgment is ordinarily opened at the insistence of a party who is able to show good cause as to why the execution of the judgment would be inequitable.

To open a court is to formally announce, ordinarily through the bailiff, that the session has commenced and that the business before the tribunal will proceed.

The term open is also used as an adjective in reference to that which is patent, visible, apparent, or notorious, such as a defect in a product, or conduct such as lewdness.

1. An unexecuted order that is still valid.

2. The start of trading on a securities exchange.

Investopedia Says:
1. Orders that are entered by investors but not yet transacted are deemed to be open until they expire or are filled.

2. Different exchanges will have different opening times. For instance, the New York Stock Exchange (NYSE) and the Nasdaq open at 9.30am EST, whereas the American Stock Exchange (AMEX) opens at 9am EST for options on debt securities.

Related Links:
Here are the answers to all the questions you have about stock exchanges but are too afraid to ask! Getting To Know The Stock Exchanges
Find out the various ways in which a broker can fill an order, which can affect costs. Understanding Order Execution
Taking control of your portfolio means knowing what orders to use when buying or selling stocks. The Basics Of Trading A Stock

To place the first bet in the first round.

SoundPoker Says: If by position you are the first player to act and you decide to call the bet, you are "opening". Furthermore, you can also open if all players who act before you check and you decide to bet.

See Also: Act, Bet, Call, Check, Position

IN BRIEF: Moved from a shut or closed position so as to admit passage; Cleared of obstructions.

I just kept knocking on doors until the right one opened. — H. Joseph Gerber

LearnThatWord.com is a free vocabulary and spelling program where you only pay for results!

sign description: Both B-hands with the palms down open up and come apart.

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For a list of words related to open, see:

• Stagecraft, Production, and Dramatic Structure - open: (vb) begin series of performances
• Television Programming and Institutions - open: beginning of program
• Bowling
• Phonetics - open: (adj) designating vowel produced with relatively large opening above the tongue; designating syllable ending with vowel
• Reasoning and Informing - open: broach subject; declare ceremoniously
• Warm, Friendly, Sensitive, or Loving
• Giving, Trusting, Innocent, or Generous

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See words rhyming with "open."

  See crossword solutions for the clue Open.

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

Dansk (Danish)
adj. - åben, fri, offentlig, utilsløret, uforbeholden, ikke afgjort
v. tr. - åbne, lukke op, begynde, indlede
v. intr. - åbnes, åbne sig, springe ud
n. - åbning, åbent område, åbent marked, åben sportsbegivenhed

idioms:

• (out) in the open    uden hemmeligheder
• be open to    være åben overfor
• open air    i fri luft, frilands-
• open and shut    oplagt, ganske ligetil
• open book    åben bog
• open country    åbent terræn
• open day    åben entré
• open house    åbent hus
• open letter    åbent brev
• open market    åbent marked
• open mind    fordomsfri
• open old sores    rive op i gamle sår
• open prison    åbent fængsel
• open question    åbent spørgsmål
• open season    åben (jagt)sæson
• open secret    offentlig hemmelighed
• open the door to    åbne døren for
• open to debate    åben for diskussion
• Open University    åbent universitet
• open verdict    åbent udslag
• Open, Sesame    Sesam, luk dig op!
• open-heart surgery    åbent hjerteindgreb
• with open arms    med åbne arme

Nederlands (Dutch)
open, vacant, onbeslist, publiek, openbaar, eerlijk, oprecht, onzeker, ontvankelijk, gezellig, openlijk, openen, ontsluiten, opstarten, beginnen, openvouwen, aanbreken, openstellen, ontluiken, groeien

Français (French)
adj. - ouvert (un paquet, un magasin), écarté (les bras), ouvert (à la circulation), libre (une ligne de téléphone), dégagé (la vue), découvert, décapoté, à ciel ouvert (une mine), exposé à, ouvert à, vacant (un emploi), ouvert à tous (une compétition), public, franc, non dissimulé, manifeste, non résolu, non tranché, ajouré, (Sport) open, (Mus) à vide, (Ling) ouvert
v. tr. - (Comm) ouvrir (un magasin), inaugurer, ouvrir (une exposition, une session parlementaire), creuser (un écart)
v. intr. - (Comm) ouvrir (un magasin), commencer, (Art, Cin, Théât) sortir (sur les écrans), ouvrir (une exposition), ouvrir le débat, (Jur) prendre la parole, se creuser (un écart), (lit, fig) se former (une crevasse), (Fin) débuter (des actions)
n. - plein air, terrain découvert, (fig) en plein jour, (Sport) (tournoi) open

idioms:

• be open with    être franc avec (qn)
• in the open    à l'air libre, s'exposer à
• open air    en plein air (un théâtre)
• open and shut    transparent, clair
• open book    (comprendre) à livre ouvert
• open country    en rase campagne, en plein champ
• open day    journée portes ouvertes
• open house    (être) hospitalier, (US) journée portes ouvertes
• open letter    lettre ouverte
• open market    (Écon) marché libre
• open old sores    ouvrir/raviver d'anciennes blessures
• open prison    prison ouverte
• open question    question ouverte
• open season    saison de la chasse
• open secret    secret de Polichinelle
• open the door to    ouvrir la voie à
• open to    être ouvert à
• open to debate    discutable
• Open University    (GB, Univ) système d'enseignement universitaire par correspondance ouvert à tous
• open up    ouvrir, se creuser (un écart), (lit, fig) se former, s'ouvrir, éclore, (Comm) ouvrir, (Mil) se mettre à tirer, creuser (un fossé), ouvrir (un magasin), ouvrir (une route), exploiter (une forêt), (fig) ouvrir (des possibilités)
• open verdict    (Jur) verdict de décès sans cause déterminée
• Open, Sesame    Sésame ouvre toi!
• open-heart surgery    (Méd) chirurgie à c¯ur ouvert
• out in the open    à l'air libre, s'exposer à
• with open arms    à bras ouverts

Deutsch (German)
v. - (sich) öffnen, aufmachen, eröffnen, beginnen, aufschlagen, aufgehen
adj. - offen, öffentlich, frei, geöffnet, ungeklärt
n. - freier Himmel, offenes Land, offene See, Öffentlichkeit

idioms:

• be open with    [in bezug auf etw. (Akk.)/gegenüber jmdm.] offen sein
• in the open    im Freien, unter freiem Himmel
• open air    im Freien, Freiluft-
• open and shut    klar
• open book    eine leicht zu durchschauende Person
• open country    freie Landschaft
• open day    Tag der offenen Tür
• open house    Gastfreundschaft für alle Besucher, Tag der offenen Tür
• open letter    offener Brief
• open market    offener und freier Markt
• open old sores    alte Wunden öffnen
• open prison    offenes Gefängnis
• open question    offene Frage
• open season    Jagdzeit
• open secret    offenes Geheimnis
• open the door to    möglich machen
• open to    offen sein für
• open to debate    zur Debatte stehen
• Open University    Fernuniversität
• open up    aufmachen, öffnen, aufschlagen, aufspannen
• open verdict    Feststellung eines Verbrechens ohne Namens- od. Ursachennennung
• Open, Sesame    Sesam-öffne-dich
• open-heart surgery    Chirurgie am offenen Herzen
• out in the open    im Freien, unter freiem Himmel
• with open arms    mit offenen Armen

Ελληνική (Greek)
v. - ανοίγω, αρχίζω, λύνω, αποσφραγίζω, ξετυλίγω/-ομαι, εγκαινιάζω, αποκαλύπτω, κοινολογώ, διευρύνω
adj. - ανοικτός, ανεμπόδιστος, απεριόριστος, φανερός, πασίδηλος, έκδηλος, ακάλυπτος, ξέσκεπος, ελεύθερης προσπέλασης, διεκδίκησης ή συμμετοχής, ειλικρινής, απροκάλυπτος, ενεργός, ανοιγμένος (λογαριασμός κ.λπ.), ασφράγιστος, (για θέση κ.λπ.) χηρεύων, εκκρεμής
n. - ανοικτός χώρος

idioms:

• (out) in the open    έξω στο ύπαιθρο
• be open to    είμαι ανοιχτός σε, είμαι ευάλωτος σε
• open air    ύπαιθρο, υπαίθριος
• open and shut    ξεκάθαρος
• open book    εύκολα κατανοητό άτομο, "ανοιχτό βιβλίο"
• open country    εξοχή
• open day    ημέρα ελεύθερης εισόδου
• open house    ανοικτό/φιλόξενο σπίτι
• open letter    ανοικτή επιστολή
• open market    (οικον.) ανοικτή ή ελεύθερη αγορά
• open mind    ανοιχτό, προοδευτικό μυαλό
• open old sores    ξύνω παλιές πληγές
• open prison    ανοιχτή φυλακή (ειδικό σύστημα σωφρονισμού)
• open question    εκκρεμές ή αναπάντητο ερώτημα
• open season    εποχή κυνηγιού
• open secret    κοινό μυστικό
• open the door to    δίνω μια ευκαιρία σε
• open to debate    ανοιχτό προς συζήτηση
• Open University    Ανοιχτό Πανεπιστήμιο
• open verdict    (νομ.) ετυμηγορία στην οποία δεν κατονομάζονται οι δράστες
• Open, Sesame    άνοιξε σουσάμι, κλειδί μιας υπόθεσης, μυστικό επιτυχίας
• open-heart surgery    (ιατρ.) εγχείριση ανοικτής καρδιάς
• with open arms    με ανοιχτές αγκάλες

Italiano (Italian)
aprire, sbocciare, schiudersi, aperto, libero, franco, vulnerabile, suscettibile, socievole

idioms:

• be open to    essere accessibile a
• open air    aria aperta
• open and shut    chiaro e semplice
• open book    libro aperto
• open country    aperta campagna
• open day    giornata libera
• open house    casa aperta
• open letter    lettera aperta
• open market    mercato libero
• open mind    di larghe vedute
• open prison    programma di rieducazione
• open question    questione in sospeso
• open season    stagione aperta
• open secret    segreto di Pulcinella
• Open University    Università aperta
• open verdict    non luogo a procedere
• Open, Sesame!    Apriti, Sesamo!
• open-heart surgery    chirurgia a cuore aperto

Português (Portuguese)
v. - abrir
adj. - aberto, exposto, amplo
n. - abertura (f)

idioms:

• (out) in the open    ao ar livre, em alto mar
• be open to    estar disposto a
• open air    céu aberto, ar livre
• open and shut    evidente, muito simples
• open book    livro aberto
• open country    terreno plano
• open day    dia aberto
• open house    visitação pública, casa aberta aos amigos
• open letter    carta aberta, manifesto
• open market    mercado aberto
• open mind    imparcialidade, compreensão
• open prison    prisão aberta
• open question    questão aberta
• open season    estação de caça ou de pesca
• open secret    segredo de polichinelo
• Open University    Universidade Aberta
• open verdict    veredicto em aberto
• Open, Sesame!    Abre-te Sésamo!
• open-heart surgery    cirurgia de coração

Русский (Russian)
открывать, открываться, открытый, свободный

idioms:

• (out) in the open    под открытым небом, откровенно
• be open to    быть открытым для
• open air    не в помещении, под открытым небом
• open and shut    ясный, простой
• open book    простодушный человек, ничего нет скрытого
• open country    просторы
• open day    день открытых дверей
• open house    гостеприимный, день открытых дверей
• open letter    открытое письмо
• open market    свободный рынок
• open mind    без предрассудков
• open prison    тюрьма открытого типа
• open question    нерешенный вопрос
• open season    охотничий сезон
• open secret    секрет, известный всем
• Open University    университет заочной учебы
• open verdict    заключение о смерти по неясной причине
• Open, Sesame!    Сезам, откройся!
• open-heart surgery    операция на открытом сердце

Español (Spanish)
adj. - abierto, vacante, desocupado, libre, expansivo, sincero, indeciso, susceptible, sensible, destapado, despejado, claro, expuesto, franco
v. tr. - empezar, comenzar, abrir, destapar, soltar, desabotonar, nacer, salir, despejado, separar, iniciar
v. intr. - abrirse, descubrirse, aparecer a la vista, presentarse, confiarse, explicarse, iniciarse, comenzarse
n. - sensible, claro, lugar abierto, raso

idioms:

• be open with    ser abierto con
• in the open    al descubierto, al aire libre, abiertamente, afuera
• open air    aire libre
• open and shut    obvio, indiscutible, claro, evidente
• open book    un libro abierto
• open country    campo raso, descampado
• open day    día abierto al público cuando por lo general está cerrado
• open house    fiesta de inauguración de residencia
• open letter    carta abierta
• open market    mercado libre, mercado abierto
• open old sores    abrir viejas heridas
• open prison    prisión de régimen abierto
• open question    una cuestión sin resolver
• open season    temporada de caza y pesca
• open secret    secreto a voces
• open the door to    abrir la puerta a
• open to    estar abierto a, dispuesto a
• open to debate    discutible
• Open University    Universidad a Distancia
• open up    abrir, destapar, ampliar
• open verdict    veredicto inconcluso
• Open, Sesame    ¡Sésamo ábrete!
• open-heart surgery    cirugía de corazón abierto
• out in the open    al descubierto, al aire libre, abiertamente, afuera
• with open arms    con los brazos abiertos

Svenska (Swedish)
v. - öppna
adj. - öppen
n. - det fria, friska luften, öppen tävling för amatörer och proffs

中文（简体）(Chinese (Simplified))
开着的, 公开的, 开放的, 打开, 开放, 公开, 展开, 展现, 开始, 空旷, 户外

idioms:

• (out) in the open    在户外, 在野外, 在露天
• be open to    开放
• open air    户外, 露天
• open and shut    一目了然的, 清清楚楚的
• open book    人皆尽知的事物
• open country    开阔的田野, 旷野, 开放土地
• open day    接待日
• open house    家庭招待会, 学校等的接待日
• open letter    公开信
• open market    自由市场
• open mind    坦率, 思想开阔, 无偏见
• open old sores    提及伤心往事, 碰触到心中痛处
• open prison    不设防监狱
• open question    允许讨论的问题, 未决问题, 有争议的问题
• open season    解禁期, 开放季节, 渔猎开放期
• open secret    公开的秘密
• open the door to    向...开门
• open to debate    可以讨论, 公开讨论
• Open University    开放大学
• open verdict    存疑判决
• Open, Sesame    芝麻开门
• open-heart surgery    开心手术
• with open arms    热情地, 友好地

中文（繁體）(Chinese (Traditional))
adj. - 開著的, 公開的, 開放的
v. tr. - 打開, 開放, 公開
v. intr. - 展開, 展現, 開始
n. - 公開, 空曠, 戶外

idioms:

• (out) in the open    在戶外, 在野外, 在露天
• be open to    開放
• open air    戶外, 露天
• open and shut    一目了然的, 清清楚楚的
• open book    人皆盡知的事物
• open country    開闊的田野, 曠野, 開放土地
• open day    接待日
• open house    家庭招待會, 學校等的接待日
• open letter    公開信
• open market    自由市場
• open mind    坦率, 思想開闊, 無偏見
• open old sores    提及傷心往事, 碰觸到心中痛處
• open prison    不設防監獄
• open question    允許討論的問題, 未決問題, 有爭議的問題
• open season    解禁期, 開放季節, 漁獵開放期
• open secret    公開的祕密
• open the door to    向...開門
• open to debate    可以討論, 公開討論
• Open University    開放大學
• open verdict    存疑判決
• Open, Sesame    芝麻開門
• open-heart surgery    開心手術
• with open arms    熱情地, 友好地

한국어 (Korean)
adj. - 열린, 아물지 않은, 비어있는
v. tr. - 열다, 개척하다, 시작하다, 누설하다
v. intr. - 열리다, (물건이)찢어지다, (마음이)개화되다
n. - 빈터, 시작경기, 창해

idioms:

• be open to    ~에게 기회를 주다, 문호를 개방하다
• with open arms    양팔을 벌리고 환영하다

日本語 (Japanese)
v. - 開ける, 開く, 始める, 開始する, 公開する, 打ち明ける, 切り開く, 広がる, 向いている
adj. - 開いている, 公開された, 自由参加の, 公然の, 率直な, 広々とした, 覆いのない, 空位の, あいている, 母音で終わる, 開いた
n. - 戸外, 空き地, 開けた場所

idioms:

• (out) in the open    公である
• an open book    明白なもの
• an open mind    偏見のないこと
• be open to    受けやすい
• leave/keep one's options open    態度決定を保留する
• Open    広々とした場所, 広々した海, 露天, 周知, 公開選手権試合, 開路, 開く, あける, 広げる, 切り開く, 見える所に来る, 通れるようにする, 開拓する, 開始する, 冒頭陳述をする, 公開する, 打ち明ける, 割れる, 口があく, 本を開く, 気持を打ち明ける, 広々と見晴らされる, 通ずる, ほえ始める, 発砲する, 寄り付く, 開いた, 開けたままの, 広げた, 広い, 開放の, 開口の, 傾けられた, 見ている, 開いている, 母音で終わる, 解禁の, 制約のない, 公開の, 率直な, 未決算の
• open air    戸外
• open and shut    明々白々で
• open book    開いた本
• open country    広々とした田園
• open day    一般公開日
• open fire on    向かって砲撃開始する
• open house    自宅開放, 一般公開日
• open letter    公開状
• open market    自由市場
• open mind    偏見のない心
• open one's heart    本心を明かす, 気前よくふるまう
• open one's mouth    口を開く
• open prison    開かれた牢獄
• open question    未決問題, 異論の多い問題
• open season    狩猟期
• open secret    公然の秘密
• open slather    勝手気まま
• open the door to    門戸を開く, 便宜を与える
• open the floodgates    抑制を解く
• open to debate    討論を受け入れる
• open to offers    申し出を受け入れる
• Open University    通信制大学
• open verdict    有疑評決
• the heavens open    急な土砂降り
• with eyes open    危険を承知で
• with open arms    両手を広げて, 心から

العربيه (Arabic)
‏(فعل) يفتح (صفه) مفتوح (الاسم) مكان طلق‏

עברית (Hebrew)
adj. - ‮פתוח, כן, הוגן, גלוי, פנוי, תחת כיפת השמיים‬
v. tr. - ‮פתח, התחיל, הודיע, נשא נאום, גילה, פינה (מכשולים)‬
v. intr. - ‮נפתח, נחשף, היה פתוח ל-, התפשט, נפרש‬
n. - ‮מקום פתוח, מרחב, מצב גלוי‬

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