Answer 1

The time an item is actually being worked on in a machine or work area.

Answer 2

The time a product is actually being worked on in a machine or work area.

Answer 3

The time a product is actually being worked on in design or production and the time an order is actually being processed. Typically, processing time is a small fraction of throughput time and lead time.

Answer 4

Time required performing a process on an individual part