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 ?
The kitchen, which is in need of modernisation, opens onto the inner courtyard with access to outhouses.
If this work is indeed about hybridity and exchange apart from closed series and unencumbered solipsism, its formal dialectic of process and effect quickly opens onto social signification.
From the 20th floor and up, a private express elevator opens onto 12 full-floor apartments varying in size from 4,000 to well over 7,000 square feet.
In addition to the old movie set, the 1 1/4-mile loop trail navigates a narrow slot canyon and ultimately opens onto a dazzling red-rock vista to the north.
The final scene opens onto an immense square formed by hundreds of candies, which are magically extinguished one after the other, thus closing the ballet's epilogue.
The dining room opens onto a balcony, complete with decking, which over looks the garden.
A storage wall of grey-green mdf is a backdrop for the parents' bed, which opens onto an unenclosed bathing area.
As a disarmingly productive instance of conceptual displacement, it necessarily opens onto the notion of the artist as a fictional or fictionalized construction, here conceived not as a latter-day Rrose Selavy but as a strangely anonymous site of cultural and social production.
Famed landscape architect Tom Balsley has designed a 5,795 square-foot fifth floor terrace retreat with a dog run, a landscaped garden for meditation, reading, and city viewing, a mini pantry kitchen for easy entertaining and a "state-of-the-art" fitness center which opens onto a mahogany deck for stretching and yoga.
My back door opens onto the street not into the entry therefore the garbage men will not come up the street.
At right, the home opens onto spacious grounds with a pool for friends and family.