The total time required to manufacture an item, exclusive of lower-level purchasing lead time. For make-to-order products, it's the length of time between the release of an order to the production process and shipment to the final customer. For make-to-stock products, it's the length of time between the release of an order to the production process and receipt into finished goods inventory. Included are order preparation time, queue time, set-up time, run time, move time, inspection time, and put-away time. Synonym: Manufacturing Cycle Time.