Able to be used up, reduced, or exhausted.
From 'deplete' (from Latin 'de-' + 'plere' meaning to empty) + '-able' (capable of). The term emerged in environmental and resource management vocabulary in the 20th century.
Oil companies don't like the word 'depletable' because it reminds people that fossil fuels will run out—it's technically accurate but sounds inconvenient to corporate profits.
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