- depletion (n.)
[depletion 词源字典]
- 1650s, from Late Latin depletionem (nominative depletio) "blood-letting," noun of action from past participle stem of Latin deplere "to empty," literally "to un-fill," from de- "off, away" (see de-) + plere "to fill" (see pleio-).[depletion etymology, depletion origin, 英语词源]