Depletion \De*ple"tion\, n. [Cf. F. d['e]pl['e]tion.]

1. The act of depleting or emptying.

2. (Med.) the act or process of diminishing the quantity of fluid in the vessels by bloodletting or otherwise; also excessive evacuation, as in severe diarrhea.

Source: Webster's Revised Unabridged Dictionary (1913)