open Meaning in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “open” in the English Dictionary

"open" in British English

See all translations

openadjective

uk   /ˈəʊ.pən/  us   /ˈoʊ-/

open adjective (NOT CLOSED)

A2 not ​closed or ​fastened: an open ​door/​window An open ​suitcaselay on her ​bed. You ​left the ​container open. Someone had ​left the ​window wide (= ​completely) open. He had several ​nasty open wounds (= those which had not ​begun to ​heal).
More examples

open adjective (READY)

A1 [after verb] ready to be used or ​ready to ​provide a ​service: The ​supermarket is open till 8.00 p.m. The ​road is open now, but it is often ​blocked by ​snow in the ​winter. The new ​hospital was ​declared open by the ​mayor.
More examples

open adjective (NOT ENCLOSED)

B1 not ​closed in or ​covered: It's not a good ​idea to ​camp in the ​middle of an open field (= one which is not ​covered with ​trees, ​bushes, etc.). Suddenly we had ​left the ​city behind and were out in open country. The ​survivors were ​adrift on the open sea (= ​far from ​land).
More examples

open adjective (COMPUTER)

If a ​computerdocument or ​program is open, it is ​ready to be ​read or used: Make ​sure you have both ​files open at the same ​time.

open adjective (AVAILABLE)

C1 [after verb] available; not ​limited: There are still several ​possibilities open to you. The ​competition is open to anyone over the ​age of 16. Is the ​library open to the ​generalpublic? Their ​wholeattitude to these ​negotiations is open tocriticism (= can be ​criticized). I'd like to ​think I'm open to (= ​willing to ​consider) any ​reasonablesuggestion. An ​accident would lay the ​wholeissue of ​safety open (= ​cause it to be ​considered).
More examples

open adjective (NOT SECRET)

C2 not ​secret: There has been open ​hostility between them ​ever since they had that ​argument last ​summer.C2 honest and not ​trying to ​keep things ​secret: He's very open about his weaknesses. I ​wish you'd be more open with me, and ​tell me what you're ​feeling. She has an ​honest, open ​face.
More examples

open adjective (NOT DECIDED)

not ​decided or ​certain: We don't have to make a ​firmdecisionyet. Let's leave it open. We can ​leaveouroffer open for another ​week, but we have to have ​yourdecision by then. I ​want to ​keep my options open, so I'm not ​committing myself ​yet.

openverb

uk   /ˈəʊ.pən/  us   /ˈoʊ-/

open verb (BEGIN)

B2 [I or T] to (​cause to) ​begin: I would like to open my ​talk by giving a ​briefbackground to the ​subject. I'm going to open an ​account with another ​bank. The ​Olympic Games open ​tomorrow. A new ​radiostation is ​due to open (up) next ​month. The ​film opens (= will be ​shown for the first ​time) in New York and Los Angeles next ​week.
More examples

open verb (NOT CLOSED)

A1 [I or T] to ​move something to a ​position that is not ​closed, or to make something ​change to a ​position that is not ​closed: Could you open the ​window, ​please? You can open ​youreyes now - here's ​yourpresent. The ​flowers open (out) in the ​morning but ​close again in the ​afternoon. From the ​kitchen there is a ​door that opens (out) into the ​garden. That ​door opens (out) onto the ​patio.informal "Open up (= open the ​door) - it's the ​police!" ​shouted the ​policeofficer, ​banging on the ​door.A2 [T] to ​remove or ​separatepart of a ​container or ​parcel so that you can ​see or use what it ​contains: Don't open a new ​bottle just for me. I couldn't ​wait to open the ​letter.
More examples

open verb (READY)

A2 [I or T] If a ​shop or ​office opens at a ​particulartime of ​day, it ​starts to do ​business at that ​time: The ​coffeeshop opens at ten o'clock. He opens (up) his ​coffeeshop at ten o'clock.B2 [T] If someone, usually someone ​important, opens a ​building, ​event, etc., they ​officially say that it is ​ready to be used or to ​startoperating: The new ​hospital will be officially opened by the ​mayor on ​Tuesday.
More examples

open verb (AVAILABLE)

[T] to make something ​available: This ​research opens (up) the ​possibility of being ​able to ​find a ​cure for the ​disease. The ​country is ​planning to open (up) ​itseconomy toforeigninvestment.
More examples

open verb (COMPUTER)

B1 [T] If you open a ​computerdocument or ​program, you make it ​ready to ​read or use: To open a new ​document, ​click "File" and then ​click "New". Click the ​desktopicon to open the Cambridge Advanced Learner's Dictionary.

opennoun [S]

uk   /ˈəʊ.pən/  us   /ˈoʊ-/

open noun [S] (NOT ENCLOSED)

the open somewhereoutside, ​rather than in a ​building: It's good to be (out) in the open after being cooped up in an ​office all ​day.

open noun [S] (NOT SECRET)

bring sth out into the open to ​tellpeopleinformation that was ​secret: It's ​time this ​issue was ​brought out into the open.
(Definition of open from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"open" in American English

See all translations

openadjective, adverb [not gradable]

 us   /ˈoʊ·pən/

open adjective, adverb [not gradable] (POSITIONED FOR ACCESS)

being in a ​position that ​allows things to ​pass through or that ​allows for ​immediate use; not ​closed or ​fastened: The ​window was ​wide open. The ​trunk of his ​car had been ​pried open.

openadjective

 us   /ˈoʊ·pən/

open adjective (READY FOR USE)

[not gradable] ready to be used or to ​provide a ​service: The ​supermarket is open till 9 p.m.

open adjective (NOT DECIDED)

not ​decided or ​certain: I ​want to ​keep my ​options open until I have all the ​facts. Whether we’ll go is still an open ​question. You should ​keep an open ​mind about ​your new ​school (= not ​form any ​opinions) until you’ve been there.

open adjective (NOT SECRET)

not ​secret: Open ​warfare had ​broken out in Yugoslavia. A ​person who is open is ​honest and not ​trying to ​hide something: He is ​quite open about his weaknesses.

open adjective (NOT COVERED)

not ​enclosed or ​covered: The ​park is one of the city’s ​largest open ​spaces.

open adjective (AVAILABLE)

[not gradable] available; not ​limited: Are there any ​positions open in the ​marketingdepartment? This ​library is open to the ​generalpublic. Their ​behavior at these ​negotiations is open to ​criticism (= can be ​criticized). I’m open to (= ​willing to ​consider) any ​reasonablesuggestion.
openly
adverb  us   /ˈoʊ·pən·li/
She ​talked about her ​cancerquite openly.
openness
noun [U]  us   /ˈoʊ·pən·nəs/
The ​agencyreleaseddetailedplans for ​greater openness and ​strongerstandards in the ​internationalmarketplace.

openverb [I/T]

 us   /ˈoʊ·pən/

open verb [I/T] (BEGIN)

to ​begin something or ​cause it to ​begin: [T] I would like to open the ​meeting by ​asking each of you to ​introduce yourself. [M] They’re opening up a new ​restaurant in about a ​month. [I] The ​film opens (= will be ​shown for the first ​time) next ​week.

open verb [I/T] (MAKE READY FOR USE)

to ​become or make something ​ready to ​provide a ​service: [I] The ​cleaners opens (up) around seven. [T] They opened the ​exhibit to the ​publicyesterday.
opening
adjective [not gradable]  us   /ˈoʊ·pə·nɪŋ/
He made some opening ​remarks, then ​introduced the ​mainspeaker.
(Definition of open from the Cambridge Academic Content Dictionary © Cambridge University Press)

"open" in Business English

See all translations

openadjective

uk   us   /ˈəʊpən/
COMMERCE if a ​shop, ​bank, ​office, etc. is open, its door are ​unlocked and it is doing ​business: Our ​offices are open from 9 to 5. The ​club has a liquor ​licenseallowing it to remain open until 2 a.m. The new ​airportterminal is now open for ​business.
STOCK MARKET if a ​financialmarket is open, ​investors can ​tradeshares, ​bonds, etc. on it: For the ​purposes of this ​agreement, a ​business day is any day that the New York Stock Exchange is open for ​business.
willing to consider something: open to sth A ​spokesman for the ​organization said they were open to a ​deal at the ​rightprice. open to ​offers/suggestions/​negotiation
available to be used, considered, etc. : open to sth Membership is open to all ​localbusinesses.leave the door/option/possibility open The ​appealscourtleft open the possibility that the ​computinggiant could be ​forced to ​change its ​businesspractices.
not ​secret or ​hidden from ​members, the ​public, etc.: open about sth After the ​economiccrisis, ​consumers expect ​banks to be more open and ​transparent about their ​lendingpolicies.
allowing everyone to ​share their ​ideas and ​information: open debate/dialogue/discussion These are complicated ​questions, and we welcome an open discussion about them. open ​communication
IT if a ​computerfile, ​document, or ​program is open, it is ​ready to be used: Make sure the ​file you're ​copying to is open before you ​click 'Paste'.
Compare
keep your options open to ​avoid doing or deciding something immediately in ​case there is a better ​opportunity to consider later: They are still ​keeping their ​options open but a ​merger is a ​strong possibility.
open court LAW a ​court of ​law where the details of a ​case are ​available to the ​public: The ​lawfirm didn't want the ​hearingsheld in open ​court because it feared the ​press would ​influencepublicopinion.
open question something which has not been decided yet: How ​voters will view this latest ​crisis remains an open ​question.
have/keep an open mind to wait until you know all the facts before ​forming an ​opinion or making a decision about something: The ​judge urged the ​jury to ​keep an open mind until they had heard all the ​evidence.

openverb

uk   us   /ˈəʊpən/
[I or T] COMMERCE to ​start doing ​business and ​dealing with ​customers : We open ​daily from 11 to 6.
[I or T] COMMERCE to ​start a new ​business: The Chicago-based coffee ​chain has opened ​branches in every ​major city in the UK.
[I] STOCK MARKET if ​shares, ​bonds, etc. open at a particular ​price or ​rate, that is the ​amount they are ​worth when ​tradingstarts that day: Share ​prices on the London Stock Exchange opened ​lower today.
[T] to ​start something: open a conference/meeting/proceedings The Chief Executive opened the ​meeting with an announcement of ​bigredundancies throughout the ​group.open discussions/negotiations/talks The ​union had not yet decided when to open ​negotiations with ​management.
[T] IT if you open a ​computerfile, ​document, or ​program you make it ​ready for you to ​start reading or ​working on: You can open the ​program from the ​menu or by double-clicking the ​icon.
open an account BANKING to ​enter into an ​agreement with a ​bank or other ​financialorganization so that they ​look after your ​money: Open an ​internetsavingsaccount before the end of March and get a ​freemobilephone.
open your borders/markets COMMERCE to ​allowforeign countries to ​sell their ​goods and ​products in your country with ​fairconditions: The US threatened to put a 100% ​tax on Japan's ​luxurycars unless it ​agreed to open its ​markets to US ​cars and ​parts.
open doors for sb (also open the door for sb) to make it possible for someone to do something: The ​formerRepublicancandidate was ​key in opening the door for more women to ​run for ​office in the US.
open the floodgates (to sb/sth) to make a lot of ​people do something by ​removing a ​rule that ​stopped it being possible before, especially when you do not want this to ​happen: Banks feared the ​legalaction could open the ​floodgates for ​customers to ​sue over high ​fees.
Phrasal verbs

opennoun [S]

uk   us   /ˈəʊpən/
STOCK MARKET the ​time when a ​stockmarket begins ​trading: Bonds ​rose at the open after a ​cut in German ​interestrates. Stocks ​fellheavily at the open of ​trading today.
(Definition of open from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of open?
Add Cambridge dictionaries to your browser to your website
Word of the Day

golden

made of gold

Word of the Day

Introducing a new author and a new weekly blog post!
Introducing a new author and a new weekly blog post!
by Cambridge Dictionaries Online,
August 27, 2015
The English language is constantly changing. You know that. But did you know that at Cambridge Dictionaries Online we keep track of the changes? We continually add new words and new meanings to our online dictionary for learners of English. Some of them are new to English entirely (neologisms), and some

Read More 

parklet noun
parklet noun
August 31, 2015
a public outdoor space that may be associated with a local business but where anyone can sit Pop-up cafes in NY are what’s actually called parklets in many other places around the country.

Read More