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Using the terminology of lean management practices, this note addresses muda, or waste, by defining its subtypes and providing a framework for their identification in production and service processes. A form useful for conducting a muda audit is provided.

Lean has been defined as the "relentless pursuit of the elimination of waste." This technical note provides a glossary of terms concerning Lean implementation, including muda, muri, nura, kanban, andon board, SMED, poka-yoke, 5S, gemba, takt time, heijunka, and kaizen.