Capable of being consumed or used up; able to be destroyed or wasted.
From consumption + -ible (Latin suffix meaning 'able to be'). Similar formation to audible (able to be heard) or edible (able to be eaten).
The -ible suffix marks things that CAN be done to something—edible things can be eaten, visible things can be seen, and consumptible things can be consumed. It's the language of possibility!
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