thoracic aorta

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tho·rac·ic a·or·ta

[TA]
the part of the descending aorta superior to the aortic hiatus of the diaphragm (at the T-12 vertebral level).
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thoracic aorta

n.
The part of the descending aorta that extends from the arch of the aorta to the diaphragm.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

tho·rac·ic a·or·ta

(thōr-as'ik ā-ōr'tă) [TA]
The part of the descending aorta that supplies structures as far down as the diaphragm.
Synonym(s): aorta thoracica, pars thoracica aortae, thoracic part of aorta.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012