OPN has various meanings in the Computing category. Discover the full forms, definitions, and usage contexts of OPN in Computing.
Open1 adj. Of, pertaining to, or providing accessibility. For example, an open file is one that can be used because a program has issued an open file command to the operating system. Open2 vb. To make an object, such as a file, accessible. To establish a temporary logical connection between a file and a running program. The connection exists until the program closes the connection or the program terminates.
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