OPN has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of OPN in Scientific & Educational.
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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