NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,098 terms related to cancer and medicine.

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power of attorney
(POW-er ... uh-TER-nee)
A power of attorney is a legal document that gives one person (such as a relative, lawyer, or friend) the authority to make legal, medical, or financial decisions for another person. It may go into effect right away, or when that person is no longer able to make decisions for himself or herself.