open

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Related to open onto: undeft, careful scrutiny, Locatio

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 ?
Downstairs you'll find a cloak room, family room with French doors that open onto a sun terrace and a further formal dining room.
On the other side of the building, the venue's massive glass walls open onto Grand Avenue, giving Disney Hall an inviting atmosphere that encourages pedestrians to make it a stop during the workday.
Its design is intended to promote a sense of vitality and community along Flatbush Avenue, while its lobby will open onto MetroTech Commons, the landscaped public space at the center of the MetroTech campus that features many notable artworks.
From this room, french doors open onto the rear paved terrace.
The twelve video projections that make up the piece completely covered the four walls of the room, projecting viewers into a space voyage as if they were at the center of a vehicle made up of labyrinthine, lifeless spaces: doors that open onto nothingness, infinite corridors, deserted rooms, vast windows looking out onto a black sky.
From the central piazza, with its Greek amphitheatre and gardens, glass doors in slender brass frames open onto the crescent-shaped internal concourse, the necklace of circulation that yokes together the concert halls.
Grand is being realigned so that next fall the Walt Disney Concert Hall will open onto a beautiful new pedestrian-friendly promenade.
The entrance will be on West 28th Street, making it the first building on campus to open onto this street.
In the Scottsdale store, the cafe will open onto a plaza where community events will be hosted.
The entrance hall welcomes visitors with its attractive wood flooring and modern downstairs cloakroom, the lounge features a contemporary fireplace, French windows open onto a superb enclosed garden with decking and lawns, slate effect tiled flooring dominates in the kitchen and dining room, and as if that weren't enough, a large Jacuzzi bath sits nestled in the bathroom.
In everyday use, its steps encourage casual sitting about, but its focal shape is a reminder of the adjacent theatre, for doors in the building open onto the space, and windows, when uncurtained, enjoy the lake view.