Third-person singular simple present indicative form of replenish.(verb)
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Use "replenishes" in a sentence
"The earth "replenishes" fossil fuels (to use your metaphor) in a span of millions of years."
"The Gulf Coast is a living thing—the ocean takes away, and the river replenishes."
"Grain prices also dipped Wednesday because the USDA raised its one-month-old forecast of the amount of wheat and corn that will remain in U.S. inventories by the time the next harvest season replenishes supplies."