de ‧ plete /dɪˈpliːt/ BrE AmE verb [transitive usually passive]
[ Date: 1800-1900 ; Language: Latin ; Origin: depletus , past participle of deplere , from plere 'to fill' ]
to reduce the amount of something that is present or available:
Salmon populations have been severely depleted.
—depletion /dɪˈpliːʃ ə n/ noun [uncountable] :
the depletion of the ozone layer