open

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open

1. Nautical free from navigational hazards, such as ice, sunken ships, etc.
2. Music
a. (of a violin or guitar string) not stopped with the finger
b. (of a pipe, such as an organ pipe) not closed at either end
c. (of a note) played on such a string or pipe
3. Commerce
a. in operation; active
b. unrestricted; unlimited
4. (of a wound) exposed to the air
5. (esp of the large intestine) free from obstruction
6. Chess (of a file) having no pawns on it
7. Maths (of a set) containing points whose neighbourhood consists of other points of the same set
8. Computing (of software or a computer system) designed to an internationally agreed standard in order to allow communication between computers, irrespective of size, maufacturer, etc.

open

[′ō·pən]
(electricity)
Condition in which conductors are separated so that current cannot pass.
Break or discontinuity in a circuit which can normally pass a current.

open

(1)
To prepare to read or write a file. This usually involves checking whether the file already exists and that the user has the necessary authorisation to read or write it. The result of a successful open is usually some kind of capability (e.g. a Unix file descriptor) - a token that the user passes back to the system in order to access the file without further checks and finally to close the file.

open

(2)
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."

open

(3)
Non-proprietary. An open standard is one which can be used without payment.

open

(1) To engage a file for reading and writing. Technically, an app is "run" and the data file is "opened." For example, after a word processing application is "loaded and run," a document is "opened" for editing or printing. Then, the document is "closed," and the app is "exited." Apps are also said to be "opened" and "closed."

In the case of a script or batch file, "open" can mean "open" for editing or "open and run." The difference is significant. Opening a batch file to edit its contents causes no action until the user makes changes, whereas opening and running a batch file causes instructions to be executed. Contrast with close.

(2) To "run" a program (application). "Open" is increasingly used to mean "load and run."

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

(4) Made to operate or function compatibly with other products. See open architecture, open system and open source.
References in periodicals archive ?
Sam said in his speech on Sunday: "I read an article a few months ago by Sir Ian McKellen, and he said that no openly gay man had ever won an Oscar.
Incidentally, senior police officials from the district were present when the leader openly prescribed his quick fix solution to rising crime in the district.
He's the first openly gay African-American state legislator in the nation.
Nineteen states don't have any openly gay lawmakers in theirs legislatures.
2 -- color) Openly gay actor Chad Allen stars in ``Shock to the System: A Donald Strachey Mystery.
She also worked as chief of staff to New York state's first openly gay and openly HIV-positive senator, Thomas K.
And her maverick status as (to quote her Web site) "an openly gay, pro-choice, pro-death penalty, gun-owning, voted-for-Reagan progressive feminist" makes her appealing in a time when so many pundits spout prepackaged ideologies of the left or the right.
The cardinal thought that any group of Catholics who openly advertise that they aren't in acceptance of the Catholic Church's teachings is not in communion with the church and is not eligible for the Eucharist," he said.
Given Bobs experience, I felt certain that he would be elated when, in 1991, presidential candidate Bill Clinton promised to repeal the ban on gay men and lesbians serving openly in the military.
For most of them, an openly gay teacher is not someone they expect to encounter.
When anticipating the priorities and the strategies of the several hospitals, the physician executive concludes that hospital A would firmly compete (P1) in the negotiations for an affiliation agreement, hospital B would openly subordinate (S1) because its image could be further enhanced by an affiliation agreement, and hospital C would firmly compete (P1) because it is considering similar agreements with several out-of-town medical schools.
There are at least thirty openly gay and lesbian municipal officials in California," said Councilmember Prang.