Plural of depletion; instances or states of being used up, reduced, or exhausted.
From 'deplete' (Latin 'de-' + 'plere') + '-tion' (noun suffix) + '-s' (plural). The noun form emerged in economic and environmental contexts in the 20th century.
Oil companies calculate 'depletion allowances' as tax breaks—basically government-approved accounting tricks for using up Earth's resources, showing how profitable exhaustion can be.
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