OPN has various meanings in the Military category. Discover the full forms, definitions, and usage contexts of OPN in Military.
In Enterprise Service Tools, a service that can be requested from an object to effect behavior. 2. An implementation of functions or queries that an object might be called to perform. alsomethod. 3.In object-oriented design or programming, a service that can be requested at the boundary of an object. Operations include modifying an object or disclosing information about an object.
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