There are a lot of terms that are specific to Lean and Six Sigma. If you are unsure about the meaning of a term, please feel free to check our Lean and Six Sigma Glossary for a definition. If you do not find the term you are looking for, please contact us. We would be happy to answer your questions, and we may add your term to the glossary in the future.

Quality council

Leadership group guiding the implementation of quality or Six Sigma within an organization; establishes, reviews, and supports the progress of quality improvement teams.


A broad concept and/or discipline involving degree of excellence; a distinguished attribute or nature; conformance to specifications; measurable standards of comparison so that applications can be consistently directed toward business goals.

Quality assurance, or QA

Discipline (or department) of maintaining product or service conformance to customer specifications; primary tools are inspection and SPC.