The mental factor that focuses on an uncommon defining feature of an object as being distinct from everything else.
One of the five ever-functioning subsidiary awarenesses (mental factors) that takes an uncommon characteristic feature of the appearing object of a nonconceptual cognition or an outstanding feature of the appearing object of a conceptual cognition, and ascribes a conventional significance to it, different from that of everything else that appears in the background within that cognition. It does not necessarily ascribe a name or mental label to its object, nor does it compare it with previously cognized objects. Some translators render the term as "recognition."
J Hopkins: discrimination.