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 ?
Earlier on Tuesday, two other Iranian fishing boats Arman and Yaseen with a combined crew of 19 found themselves stranded in the open sea off the coasts of Gwadar and Pasni due to engine failure.
Provision of maritime consulting and support services for projects in the open sea.
The company can store crude oil being transported from the Red Sea to Asia's emerging markets, as 250 trans-shipments per year take place in the open sea around Cyprus.
The Metrological Department has warned fishermen in these areas not to travel into the open sea during these days.
There is nothing to disturb you and it completely relaxes you," says Helmy who does a dive everyday as part of his work where he takes diving teams out into the open sea.
It was eventually freed and made its way back to the open sea.
USA A great white shark swims inside the Open Sea exhibit at the Monterey Bay Aquarium in Monterey, Calif.
Fishers who work in the open sea use, preferably, specific gillnets for catching bluefish, croakers, mullet and codling, while those in the north and south bays employ driftnets for white shrimp and gillnets for fishes (SEAP, IBAMA and PROZEE, 2005).
The construction of the pitches, stadiums and stages are complete, as well as the areas that will be used by competitors in the open sea swimming and sailing events.
The man behind the project said it was his childhood dream to create a sailing boat that is both unique and can withstand the roughest waters the open sea can throw at it.
The Tropical Cyclone Warning Centre associated with the Pakistan Meteorological Department (PMD) issued a warning that the fishermen of Sindh and Balochistan who are in the open sea should return to the coast immediately.
The tropical warning centre of the Pakistan Meteorological Department has warned fishermen of Sindh and Balochistan who are in the open sea to return to coast before Wednesday evening.