open

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Related to open-heart: open-heart surgery

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 hospital has performed a total of 5,171 cardiac catheterizations and 218 open-heart surgeries.
Transcatheter aortic valve replacement (TAVR) with the Edwards SAPIEN valve allows heart surgeons to replace a patient's diseased aortic valve without traditional open-heart surgery and avoiding the need for cardiopulmonary bypass.
The CoreValve System is designed to provide a minimally invasive, non-surgical treatment option for patients with symptomatic, severe aortic stenosis who are at high risk, or are ineligible, for open-heart surgery.
If restenosis in stents were less common, angioplasty with stents might become the preferred treatment for many people otherwise slated for open-heart surgery, he says.
One operating room is dedicated exclusively for open-heart surgery.
When he was three, he endured open-heart surgery when an artificial tunnel was inserted into the right hand side of his heart.
Lahore -- Acting premiership of Finance Minister Ishaq Dar in Prime Minister Nawaz Sharif's absence over open-heart surgery has been challenged in the Lahore High Court (LHC) on Monday.
Prime Minister Modi had earlier extended his best wishes to his Sharif for his open-heart surgey to be held in United Kingdom.
NEW DELHI -- Prime Minister Narendra Modi on Saturday extended best wishes to his Pakistani counterpart Nawaz Sharif for his open-heart surgery to be held in the UK on next Tuesday.
The combination of severe carotid artery disease and coronary artery disease (CAD) is usually treated by one of three approaches, but a Cleveland Clinic study found that patients who underwent stenting of the carotid artery followed by open-heart surgery experienced the best outcomes.