Definition of "stand-alone" []

• Operating, functioning, or existing without additions or assistance; independent; able to be separate or separated. (adjective)

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• "The type of system that Mr. Ditmeyer and others favor, referred to as stand-alone PTC, would in theory increase the capacity of the rail network by making it safe for trains to operate closer together."
• "While technology in the narrowest sense can be characterized as stand-alone, explicit knowledge that is closely held and easily contained, technological competence is different."
• "Medicare Advantage insurance plans in 2012 and also boosted their use of insurance plans linked with large pharmacy chains for what's called stand-alone prescription drug plans PDPs."