Definitions of thorax

  1. the part of the human body between the neck and the diaphragm or the corresponding part in other vertebrates
  2. the middle region of the body of an arthropod between the head and the abdomen
  3. part of an insect's body that bears the wings and legs
  4. The part of the trunk between the neck and the abdomen, containing that part of the body cavity the walls of which are supported by the dorsal vertebrae, the ribs, and the sternum, and which the heart and lungs are situated; the chest.
  5. The middle region of the body of an insect, or that region which bears the legs and wings. It is composed of three united somites, each of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of Coleoptera.
  6. The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix.
  7. In the human body, the chest, containing the heart, lungs, etc.; in insects, the middle of the three main sections of the body.
  8. The part of the body between the neck and belly: the chest.
  9. The chest.
  10. Thoracie.
  11. The part of the body between the neck and the adbomen.
  12. The middle region of the body of an insect.
  13. That part of the human skeleton which consists of the bones of the chest; the cavity of the chest; that part of the body between the head and the abdomen; a breastplate, cuirass, or corselet.
  14. In anat., the chest; that part of the body situated between the neck and the abdomen, contatining the heart, lungs, & c.
  15. In higher vertebrates, that part of the body between neck and abdomen containing heart, lungs, etc. ; the body region behind the head of many Arthropods and of other smaller animals.
X