Select your Operating System below: 1  OSX 10.11 and newer. 2  OSX 10.10 and older. 3  Click on the Apple logo in the upper-left corner of your screen.  Click on the Apple logo in the upper-left corner of your screen.
Part of the Open source glossary: Also see open and Open Source. In information technology, proprietary describes a technology or product that is owned exclusively by a single company that carefully guards knowledge about the technology or the product's inner workings.n information technology, proprietary describes a technology or product that is owned exclusively by a single company that carefully guards knowledge about the technology or the product's inner workings.
adjective. The definition of proprietary is something owned or a brand or item protected by intellectual property rights. 1  An example of something that would be described as proprietary is the ownership interest you have in your possessions.