English definition of Thorax

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Definition of thorax

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Thorax (n.) 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..

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Abdomen :: Abdomen (n.) The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda..

Haematothorax :: Haematothorax (n.) Same as Hemothorax.

Coarctate :: Coarctate (a.) Pressed together; closely connected; -- applied to insects having the abdomen separated from the thorax only by a constriction.

Abdominothoracic :: Abdominothoracic (a.) Relating to the abdomen and the thorax, or chest..

Thorax :: Thorax (n.) 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..

Baenosome :: Baenosome (n.) The thorax of Arthropods.

Pleurobranch :: Pleurobranch (n.) Any one of the gills of a crustacean that is attached to the side of the thorax.

Pyopneumothorax :: Pyopneumothorax (n.) Accumulation of air, or other gas, and of pus, in the pleural cavity..

Metasternum :: Metasternum (n.) The ventral plate of the third or last segment of the thorax of insects.

Bell Bearer :: Bell bearer () A Brazilian leaf hopper (Bocydium tintinnabuliferum), remarkable for the four bell-shaped appendages of its thorax..

Parapterum :: Parapterum (n.) A special plate situated on the sides of the mesothorax and metathorax of certain insects.

Spiracle :: Spiracle (n.) One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera..

Alitrunk :: Alitrunk (n.) The segment of the body of an insect to which the wings are attached; the thorax.

Rib :: Rib (n.) One of the curved bones attached to the vertebral column and supporting the lateral walls of the thorax.

Metathorax :: Metathorax (n.) The last or posterior segment of the thorax in insects. See Illust. of Coleoptera.

Hemoothorax :: Hemoothorax (n.) An effusion of blood into the cavity of the pleura.

Manitrunk :: Manitrunk (n.) The anterior segment of the thorax in insects. See Insect.

Pleura :: Pleura (n. fem.) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane.

Trunk :: Trunk (n.) That segment of the body of an insect which is between the head and abdomen, and bears the wings and legs; the thorax; the truncus..

Disjunct :: Disjunct (a.) Having the head, thorax, and abdomen separated by a deep constriction..