Nurse practitioner: A registered nurse (RN) who has completed an advanced training program in a medical specialty, such as pediatric care. Abbreviated NP. An NP may be a primary, direct health care provider, and can prescribe medications. Some NPs work in research rather than in direct patient care.
Quick GuideFat-Burning Foods in Pictures: Blueberries, Green Tea, and More
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Last Editorial Review: 6/9/2016