verb
to undergo gangrene, a condition in which body tissue dies due to lack of blood flow or infection
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The patient's leg had become gangrened, requiring immediate medical attention.
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His finger looked all black and gangrened, dude, you should get that checked out.
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That wound is starting to look gangrened, you better do something about it.
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The corruption within the organization had gangrened to the point of no return.