Medical Dictionary

thorax tho·rax (thôr'āks')
n. pl. tho·rax·es or tho·ra·ces (thôr'ə-sēz')

  1. The part of the human body between the neck and the diaphragm, partially encased by the ribs and containing the heart and lungs; the chest.

  2. A part in other vertebrates that corresponds to the human thorax.

  3. The second or middle region of the body of an arthropod, between the head and the abdomen, in insects bearing the legs and wings.

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