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costal arch

costal arch in Medicine

costal arch n.
The portion of the lower opening of the chest formed by the cartilages of the seventh to tenth ribs.

The American HeritageĀ® Stedman's Medical Dictionary
Copyright Ā© 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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