deplēˈtable adjective

deplēˈtion noun

1. The act of emptying or exhausting
2. The reduction in total value of a natural resource (eg oil, coal) as more of it is extracted and used or sold
3. The act of relieving congestion or plethora (medicine)

deplēˈtive adjective

deplēˈtory adjective

depleted uranium noun (chem)

A sample of uranium having less than its natural content of²³⁵U

depletion layer noun (electronics)

In semiconductor materials, the area where mobile electrons do not neutralize the combined charge of the donors and acceptors, barrier layer