Glossary index
Medical terms beginning with N
Browse medical definitions and meanings in the complete glossary, or choose a letter to narrow the list.
N terms
178 results-
A substance that is being studied in the treatment of cancer.
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A virus being studied in the treatment of neuroendocrine tumors and other types of cancer.
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An evaluation of the size and shape of the nucleus in tumor cells and the percentage of tumor cells that are in the process of dividing or growing.
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A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body.
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A method of diagnostic imaging that uses very small amounts of radioactive material.
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Order is everything: the same few units in a different sequence spell a different protein, or a disease causing mutation.
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Keeping DNA behind a membrane is what separates human cells from bacteria, and it lets the cell control which genes are read.
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Sensation reduced or absent in an area, which is a different finding from the tingling and pins and needles it is often confused with.
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The title covers many levels of training and licensure, and what a nurse may legally do is set by the jurisdiction, not the word.
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What one may legally do varies by jurisdiction, so the same credential means independent practice in one place and a supervised role in another.
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The defining feature is a continuous nursing presence, which is what separates it from assisted living and from care delivered at home.
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A nutraceutical is a food derived product marketed for a health benefit beyond basic nutrition, without meeting the approval standard of a drug.
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Food is judged by what the body can pull out of it: energy, building blocks, and the trace substances that keep reactions running.
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The chain runs from appetite through digestion to absorption, and illness can break it at any single point along the way.
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Structured sessions with a trained professional that translate a medical condition into practical decisions about eating.
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Sold as a food rather than as a medicine in many countries, which changes what a maker must demonstrate before a product reaches a shelf.
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Because the word itself guarantees nothing, the credential letters after a name carry more information than the title in front of the work.
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The active ingredient in a drug used to treat infections caused by fungi (a type of microorganism).