Non-Value-Added (NVA)

A step in a process that does not add value (as defined by the customer's requirements). It is also referred to as "waste" or "Muda" (the Japanese term for "waste"). Some process steps may be defined as non-value-added but may be required, such as to confirm with safety or government regulations, to preserve financial integrity, or prevent future waste.
Related StatStuff Video: 
   -Section 2-Lean, Lesson #4 - Value Added