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MedTerms Medical Dictionary

Provided by MedicineNet.com

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Radial: A word with diverse meanings in medicine and the biomedical sciences:

Pertaining to the radius, the smaller bone in the forearm. The radial artery is so named because of its proximity to the radius.
Pertaining to the radius of a circle.
Spreading from a central point. A radial keratotomy is an eye operation in which incisions are made in the cornea that resemble the spokes in a wheel.

The word "radial" comes from the Latin "radius" meaning a spoke in a wheel which this bone was thought to resemble. The word "radiation" is derived from the same Latin word -- "radius."

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Information in the MedTerms Medical Dictionary is provided for informational purposes only and is not a substitute for professional medical advice. You should not use this information for diagnosing or treating a medical or health condition. You should carefully read all product packaging. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider.

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