1.NounWork that has been started, but is not complete.
"All the efforts to make a New Man are still work in progress."
2.NounA project that has been started but is not complete.
"Reorganizing my office is a work in progress."
3.NounSomething that is in the process of improving.
4.NounA portion of inventory that represents goods which are no longer salable as raw materials, but not yet salable as finished goods, work in process.
"Work in progress has dramatically declined due to reduced production cycle times."