Definition of open in English English dictionary
- Having a free variable
- Open or unobstructed space; an exposed location
Wary of hunters, the fleeing deer kept well out of the open, dodging instead from thicket to thicket.
- Candid, ingenuous, not subtle in character:
The man is an open book.
- In current use; mapped to part of memory
I couldn't save my changes because another user had the same file open.
- Which is not closed; accessible; unimpeded; as, an open gate
It was as if his body had gone to sleep standing up and with his eyes open.
- Is part of a predefined collection of subsets of X, that defines a topological space on X
- A sports event in which anybody can contest; as, the Australian Open
- To begin a side's innings as one of the first two batsmen
- Actively conducting or prepared to conduct business
Banks are not open on bank holidays.
- To reveal one's hand
Jeff opens his hand revealing a straight flush.
- To load into memory for viewing or editing
- Public knowledge or scrutiny; full view
We have got to bring this company's corrupt business practices into the open.
- To begin conducting business
The shop opens at 9:00.
- To start (a campaign)
Vermont will open elk hunting season next week.
- To bet before any other player has in a particular betting round in a game of poker
After the first two players fold, Julie opens for $5.
- To become open
The door opened all by itself.
- a wire that is broken midway
The electrician found the open in the circuit after a few minutes of testing.
- Public; as, an open letter, an open declaration
He published an open letter to the governor on a full page of the New York Times.
- Receptive
I am open to new ideas.
- To bring up (a topic)
I don't want to open that subject.
- To make accessible to customers or clients
I will open the shop an hour early tomorrow.
- To make something accessible or removing an obstacle to something being accessible
Turn the doorknob to open the door.
- {v} to set open, unlock, divide, explain, begin
- {a} unshut, unclosed, uncovered, plain, clear
- {f} move to an open position; be moved to an open position; begin; clear from obstructions; lead out or into; spread out; unseal; expose; make vulnerable; become receptive; remove restrictions; make accessible; make available
- You can use open to describe something that anyone is allowed to take part in or accept. A recent open meeting of College members revealed widespread dissatisfaction A portfolio approach would keep entry into the managerial profession open and flexible. an open invitation
- If you open an account with a bank or a commercial organization, you begin to use their services. He tried to open an account at the branch of his bank nearest to his workplace
- If a place opens into another, larger place, you can move from one directly into the other. The corridor opened into a low smoky room. Open out means the same as open. narrow streets opening out into charming squares
- Said of "standards" that are published and available to everyone (sometimes for a fee) Ideally said of publicly controlled standards but much abused by marketing departments who refer to proprietary protocols as "open" if at least a small part of the specification is available to public view The term "Open Systems" generally refers to Unix and the communications protocols surrounding it
- used of string or hole or pipe of instruments
- with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound"
- having no protecting cover or enclosure; "an open boat"; "an open fire"; "open sports cars"
- To open is to rotate part of one's body in such a way pointed on a line away from the center of the lane
- with open arms: see arm to open the door: see door to keep your eyes open: see eye with your eyes open: see eye to open your eyes: see eye to open fire: see fire to open your heart: see heart the heavens open: see heaven an open mind: see mind to open your mind: see mind to keep your options open: see option. an important national golf competition, especially the British Open Championship or the US Open Championship. open end trust open cluster Open Door policy open market operation open hearth process open heart surgery
- An open structure or object is not covered or enclosed. Don't leave a child alone in a room with an open fire. open sandwiches
- When a public building, factory, or company opens or when someone opens it, it starts operating for the first time. The original station opened in 1754 The complex opens to the public tomorrow They are planning to open a factory in Eastern Europe close, shut Open is also an adjective. any operating subsidy required to keep the pits open. + opening openings open·ing He was there, though, for the official opening
- ready for business; "the stores are open"
- without undue constriction as from e
- affording free passage or view; "a clear view"; "a clear path to victory"
- To spread; to expand; as, to open the hand
- not sealed or having been unsealed; "the letter was already open"; "the opened package lay on the table"
- sincere and free of reserve in expression; "Please be open with me"
- An open area is a large area that does not have many buildings or trees in it. Officers will also continue their search of nearby open ground
- affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"
- If you say that a fact or question is open to debate, interpretation, or discussion, you mean that people are uncertain whether it is true, what it means, or what the answer is. It is an open question how long that commitment can last
- Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up or covered over; applied to passageways; as, an open door, window, road, etc
- {i} spacious place; wilderness, outdoors; open air, fresh air; competition in which both professionals and amateurs may compete; state of being unconcealed
- Free; disengaged; unappropriated; as, to keep a day open for any purpose; to be open for an engagement
- Not drawn together, closed, or contracted; extended; expanded; as, an open hand; open arms; an open flower; an open prospect
- (of textures) full of small openings or gaps; "an open texture"; "a loose weave"
- Term used for a string that is allowed to vibrate throughout its full length, as opposed to being 'stopped' by pressing a finger on it
- Which is not closed; accessible; as, an open gate
- also, to means of communication or approach by water or land; as, an open harbor or roadstead
- hence, not frosty or inclement; mild; used of the weather or the climate; as, an open season; an open winter
- not secret; "open plans"; "an open ballot"
- open and observable; not secret or hidden; "an overt lie"; "overt hostility"; "overt intelligence gathering"
- tenseness or inhibition; "the clarity and resonance of an open tone"; "her natural and open response"
- make available; "This opens up new possibilities"
- {s} not closed; not sealed; exposed, vulnerable; honest, frank; receptive; unrestricted; spread out; accessible; available
- afford access to; "the door opens to the patio"; "The French doors give onto a terrace"
- If something such as a meeting or series of talks opens, or if someone opens it, it begins. an emergency session of the Russian Parliament due to open later this morning They are now ready to open negotiations. + opening open·ing a communique issued at the opening of the talks
- information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface"
- relatively empty of and unobstructed by fences or hedges or headlands or shoals; "in open country"; "the open countryside"; "open waters"; "on the open seas"
- cause to open or to become open; "Mary opened the car door"
- not requiring union membership; "an open shop employs nonunion workers"
- also, to inclosed structures or objects; as, open houses, boxes, baskets, bottles, etc
- An open wound is one from which a liquid such as blood is coming
- Some colleges do not select students to attend, rather offer admission to all students who apply These colleges usually have extensive programs designed to provide remedial or developmental help to students who enroll with an insufficient academic record
- Not of a quality to prevent communication, as by closing water ways, blocking roads, etc
- If you open your arms, you stretch them wide apart in front of you, usually in order to put them round someone. She opened her arms and gave me a big hug
- Open Game
- A type of chess opening, in which both White and Black move their king's pawn to the fourth rank with their first move
- Open Games
- plural form of Open Game
- Open Specification Promise
- A certain irrevocable promise, made by Microsoft in September 2006, that it will not assert legal rights over certain patents on implementations of an included list of technologies
- Open Specification Promises
- plural form of Open Specification Promise
- Open University
- A UK university offering distance learning taught courses, that are open to people without formal academic qualifications, teaching being by correspondence and online with mostly optional tutorials and for some courses compulsory summer schools. Access to postgraduate research is selective and is primarily taught on campus using traditional methods
- Open University
- A similar university in the Netherlands
- open a can of whoop ass
- A good-humored threat of physical harm
Chan stars in his first all-American production as chan as Hong Kong Detective Inspector Lee, a noble, innocent and caring police officer who can really bust open a can of whoop-ass when given the chance.
- open air museum
- A museum where the exhibitions are located outdoors
- open air museums
- plural form of open air museum
- open and affirming
- Of or pertaining to Christian congregations and other Christian groups that accept gay men and women as well as bisexuals and transgendered people
- open and shut case
- A problem with an easy solution
The carton of milk on the floor. The cat with milk dripping from his chops. It was an open and shut case.
- open and shut cases
- plural form of open and shut case
- open ball
- The set of all points in a metric space whose distance from a given point ("the open ball's center") is less than a given length ("the open ball's radius")
- open bar
- A bar at which drinks are served without charge, usually at a social event
The party included a reception, a dance, and an open bar.
- open beta
- Something that is in its beta stage, or being tested
- open book
- A person who through naivete responds candidly to questions or openly displays their emotions or intentions
Emile's most striking characteristic is that he hides nothing. He is an open book, acting the same in private as in public — Emile is worse at disguising his feelings than any man in the world..
- open book
- An open book decomposition
- open book
- Something of which salient aspects are obvious or easily interpreted
But I have never argued – and never will – that our most sensitive national security matters should be an open book.
- open book decomposition
- A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link
- open book decompositions
- plural form of open book decomposition
- open books
- plural form of open book
- open box
- Pertaining to a product sold by merchants at a discount, because the item was returned but found not to be defective
- open circulatory system
- circulation which is achieved primarily from the heart beating and muscle-induced locomotion of the organism, circulation without veins
- open cluster
- a more or less irregular star cluster containing tens to thousands of stars
- open clusters
- plural form of open cluster
- open compound
- A compound word with spaces in it. For example: hang out, school bus, science fiction
- open compounds
- plural form of open compound
- open content
- Content which is freely distributable and/or able to be edited, added to, and/or repaired
Many websites are copyrighted and do not have any open content.
- open content
- Freely distributable and/or able to be edited, added to, and/or repaired
This is an open-content online website.
- open cover
- A cover whose members are all open sets
- open design
- The collaborative design of things, especially of open source software
- open doors
- To lead to opportunities or (social) advantages
The training that opens doors for you that men from electrical trade schools can never pass.
- open ended straight draw
- Four cards to a straight where cards of two different ranks could complete a straight. (E.g. 4-5-6-7)
- open fire
- To begin firing at something or someone
In warfare, whoever opens fire has a greater chance of victory.
- open floor plan
- An interior of a building constructed with few walls or obstructions, giving a communal aspect
- open game
- Alternative spelling of Open Game
- open goal
- An undefended goal
- open half space
- A half space that does not include the plane that bounds it
- open house
- A casual school event where the school invites parents or guardians to come and tour their child's school, classrooms, and allow them to meet their child's teachers
- open house
- A house which is for sale and is open for inspection or tour by interested parties. Most houses for sale on the market are open on weekends
- open interest
- The number of contracts outstanding between market participants in a futures market or other derivatives market
- open interval
- an interval in the real number line which does not contain its supremum and infimum. If specified by a pair of real numbers, then it consists of all the points on the real line whose values lie strictly between those two real numbers
- open letter
- A letter addressed to one person but published (as for example in a newspaper) for the public to read
- open letters
- plural form of open letter
- open market
- A competitive market where buyers and sellers can operate without restrictions
- open markets
- plural form of open market
- open matte
- Of a soft matte film, transferred to a home video format with the full frame exposed, thus having the theatrical mattes removed
an open matte DVD.
- open mic
- A musical or comedy stage platform with open invitation, that is, where anyone is invited to perform
- open mind
- A mind willing to consider new ideas
- open minds
- plural form of open mind
- open one's big mouth
- To speak about things, when it would be better to stay silent
Grr, why do I always open my big mouth after doing something wrong.
- open outcry
- A trading method whereby traders gather in person, often in a pit, and call out to all their desire to buy or sell a quantity at a given price, transactions being consummated when two parties can agree on a price. Most frequently used in securities markets
- open outsourcing
- A socioeconomic movement resulting from the marriage of the open source movement and the recent trend towards the international outsourcing of programming
- open problem
- A problem that has been posed in a field of study such as mathematics or theoretical computer science, but whose answer is not yet known
- open problems
- plural form of open problem
- open proxy
- a proxy server that may be accessed by any Internet user
- open proxy server
- a proxy server that may be accessed by any Internet user
- open razor
- Another name for a straight razor
- open razors
- plural form of open razor
- open reading frame
- A sequence of DNA triplets, between the initiator and terminator codons, that can be translated into mRNA
- open rectangle
- A rectangle in the real plane which is an open set: i.e., which does not contain its edges. If the sides of the open rectangle are parallel to the plane's axes, then the open rectangle can be described as the Cartesian product of two open intervals
- open sandwich
- Any dish consisting of only one slice of bread, with any topping
- open sea
- That part of the sea out of sight of land
- open seating
- The provision of seating or tables without reservations
- open secret
- Information that is not widely known, despite being freely available
- open secret
- A fact that is widely known, but not acknowledged openly
It was an open secret in the profession at that time that Mr. Field had very explicit documentary evidence that would have made Mr. Evarts very uncomfortable had the Bar Association thrown down the gauntlet.
- open secrets
- plural form of open secret
- open sesame
- Open up!
- open sesame
- Any successful means of achieving a result, especially means that are magical or technical, or otherwise beyond the understanding of most people
When Mussolini was a young chap, he dabbled with socialism, imagining it to be an open sesame to a better society.
- open sesames
- plural form of open sesame
- open set
- Informally, a set such that the target point of a movement by a small amount in any direction from any point in the set is still in the set; exemplified by a full circle without its boundary
- open set
- Most generally, a member of the topology of a given topological space
- open set
- A set which can be described as an (arbitrary) union of open balls. Equivalently, a set such that for every point in it, there is an open ball centered at that point, such that that open ball is contained by the set
- open sets
- plural form of open set
- open source
- Open-source software in general
His contributions to open source are numerous.
- open source
- The practice of providing open-source code for a product
- open source
- To make open-source
- open source religion
- a decentralized religion that is continuously undergoing open source revision by its followers
- open sourced
- Simple past tense and past participle of open source
- open sources
- Third-person singular simple present indicative form of open source
- open sourcing
- Present participle of open source
- open sunshine
- Used as a metaphor for openness, transparency, public awareness
This change, dubbed the Open Sunshine policy, de-classifies the formerly confidential criteria used to determine the amount of money an organization would receive.
- open sunshine
- Total outdoor sunshine, without clouds, haze, or other obstruction
- open system
- A system that can exchange both matter and energy with its surroundings
- open system
- A system allowing hardware and software from different manufacturers to be used together seamlessly
- open the attack
- of a bowler, to bowl one of the first two overs
- open the face
- to turn the face of the bat outwards in order to hit the ball on the off side
- open the kimono
- To reveal details of one's business operations
- open time
- The period of time after an adhesive has been applied and allowed to dry, during which an effective bond can be achieved by joining the two surfaces
- open up
- To reveal oneself; to become communicative
After three hours of questioning, he finally opened up.
- open up
- To commence firing weapons
As the convoy entered the pass, we opened up on them with everything we had.
- open up
- To open
Retirements have opened up some vacancies.
- open valley
- a method of valley construction in which the steep-slope roofing on both sides are trimmed along each side of the valley, exposing the metal valley flashing
- open valleys
- plural form of open valley
- open water
- In a river, pond, or other small body of water, an area of surface unobstructed by aquatic vegetation, boulders, and the like, adequate for navigation or swimming
Willet sent the canoe through the open water between the tall reeds.
- open water
- An area of an ocean, sea, lake, or river which is not covered by ice
At the end of June, James Bay was generally open water except for loose ice persisting over its northwestern section.
- open water
- An expanse of an ocean, sea, or large lake which is distant from shore and devoid of nearby islands or other obstructions
Gaining the more open water, the bracing breeze waxed fresh; the little Moss tossed the quick foam from her bows, as a young colt his snortings.
- open wound
- A wound which pierces the skin (and/or exterior bones), so as to bare flesh and/or internal organs
Open wounds often cause heavy bleading and grave danger of invasive infection.
- open-air
- Taking place outdoors; alfresco
- open-and-shut
- simple and obvious; easily decided
- open-book
- referring to exams in which external resources such as glossaries, study notes, calculators, etc may be used
- open-book
- Attributive form of open book
open-book decomposition.
- open-collar
- Of or pertaining to work that is done from home, especially via the Internet
Far from being some special breed in three-button suits, these hard-working people are blue collar as often as white collar and, increasingly, the open collar workers of the information age.
- open-end fund
- A collective investment scheme which can issue and redeem shares at any time
- open-ended
- permitting a spontaneous or unstructured response
I'll ask you an open-ended question.
- open-ended
- Of a straight draw, made up of four consecutive cards, thus able to be completed by either of two ranks of card
The flop of 3-6-Q gave Brunson an open-ended straight draw with his 4-5 of hearts.
- open-ended
- adaptable to change
The topic is definitions, but is open-ended really.
- open-ended
- unrestricted by definite limits
There will be an open-ended discussion.
- open-eyed
- alert and vigilant
- open-face
- Being a single slice of bread with a topping
- open-faced
- Having an honest and sincere expression
- open-faced
- Being a single slice of bread with a topping
- open-handed
- Generous; giving freely
In an open-handed gesture, he bought drinks for everyone.
- open-hearted
- generous and kind
- open-hearted
- frank and candidly straightforward
- open-hearth
- Describing a reverberatory furnace used to make high-quality steel
- open-hearth
- Designating the steel so produced
- open-minded
- Willing to consider new and different ideas or opinions
- open-mouthed
- Gaping in surprise, wonder or astonishment
- open-mouthed
- Loudly insistent
- open-mouthed
- With the mouth open
- open-plan
- Having large rooms with few dividing barriers such as partitions
- open-source
- To release the source code of
The big Unix company Sun Microsystems bought the code for StarOffice in 1999, and some time afterward they open-sourced as much of it as they could.
- open-source
- Of, or relating to a product which is licensed to permit modifications and redistribution of its source code
Linux is an open-source operating system.
- open border
- A border that enables free movement of people between different jurisdictions with limited or no restrictions to movement
- open cluster
- (Tekstil) A loose, irregular grouping of stars that originated from a single nebula in the arms of a spiral galaxy. Also called galaxy cluster or galactic cluster
- open market operations
- trade of money and securities between a government and the public
- open relationship
- An open relationship denotes a relationship (usually between two people) in which participants are free to take other partners; if the couple making this agreement are married, it is an open marriage. While "open relationship" is sometimes used as a synonym for "polyamory" or "polyamorous relationship", these terms are generally differentiated. The "open" in "open relationship" usually refers to the sexual aspect of a non-closed relationship, whereas "polyamory" refers to the extension of a relationship by allowing bonds to form (which may be sexual or otherwise) as additional long term relationships
- open to
- admitting of; making possible
- open-top
- (also open-topped) (of a vehicle) not having a roof or having a folding or detachable roof
- opener
- The first goal or point scored
- opener
- A batsman who normally plays in the first two positions of an innings
- opener
- The first act in a variety show
- opener
- (in plural openers) Cards of sufficient value to enable a player to open the betting
- opening
- A hole; a gap; a crevice
He slipped through an opening in the crowd.
- opening
- Present participle of open
- opening
- A chance to make progress in a game, for example to score a goal
- opening
- The initial period a show at an art gallery or museum is first opened, especially the first evening
- opening
- A time available for an appointment
If you'd like to make a booking with us, we have an opening at twelve o'clock.
- opening
- An unoccupied employment position
We have an opening in our marketing department.
- opening
- describing the first period of play, usually up to the fall of the first wicket; describing a batsman who opens the innings or a bowler who opens the attack
- opening
- The first few moves in a game of chess
John spends two hours a day studying openings, and another two hours studying endgames.
- opener
- {n} one who or what opens, an interpreter
- opening
- {n} a place opened, breach, way, dawn
- open bite
- (Diş) [MASS NOUN] Lack of occlusion of the front teeth when the jaw is closed normally
- open fire
- turn loose
- open to
- vulnerable or subject to
- open to
- receptive to new ideas
- Open University
- In Britain, the Open University is a university that runs degree courses using the radio and television, for students who want to study part-time or mainly at home. OU a British university that teaches adult students mainly in their own homes by means of radio and television programmes and courses of study sent by mail
- Open University
- ou
