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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.

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Defect

Any instance or occurrence where the product or service fails to meet customer requirements.

Defect opportunity

A type of potential defect on a unit of throughput (output) which is important to the customer; example: specific fields on a form which creates an opportunity for error that would be important to the customer.

Defective

Any unit with one or more defects. See also Defects.

Define

First DMAIC phase defines the problem/opportunity, process, and customer requirements; because the DMAIC cycle is iterative, the process problem, flow, and requirements should be verified and updated for clarity, throughout the other phases. See alsoCharter, Customer Requirements, Process Map, VOC.

DFSS

Acronym for “Design for Six Sigma.” Describes the application of Six Sigma tools to product development and Process Design efforts with the goal of “designing in” Six Sigma performance capability.