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thorax
- in tetrapods, including humans,
- the part of the body cavity from the neck or head to the abdomen, containing the heart, lungs, etc.; chest: in mammals, the diaphragm separates it from the abdomen
- the area of the trunk covering this part
- in arthropods, the body segment between the head and abdomen to which the legs are attached
See thorax in American Heritage Dictionary 4
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