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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Endophragma :: Endophragma (n.) A chitinous structure above the nervous cord in the thorax of certain Crustacea.

Pneumatothorax :: Pneumatothorax (n.) See Pneumothorax.

Entothorax :: Entothorax (n.) See Endothorax.

Mesothorax :: Mesothorax (n.) The middle segment of the thorax in insects. See Illust. of Coleoptera.

Thoracoplasty :: Thoracoplasty (n.) A remodeling or reshaping of the thorax; especially, the operation of removing the ribs, so as to obliterate the pleural cavity in cases of empyema..

Pneumothorax :: Pneumothorax (n.) A condition in which air or other gas is present in the cavity of the chest; -- called also pneumatothorax.

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

Waist :: Waist (n.) That part of the human body which is immediately below the ribs or thorax; the small part of the body between the thorax and hips.

Bust :: Bust (n.) The portion of the human figure included between the head and waist, whether in statuary or in the person; the chest or thorax; the upper part of the trunk of the body..

Unicorn :: Unicorn (n.) Any large beetle having a hornlike prominence on the head or prothorax.

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

Pronotum :: Pronotum (n.) The dorsal plate of the prothorax in insects. See Illust. of Coleoptera.

Thoracic :: Thoracic (n.) One of a group of fishes having the ventral fins placed beneath the thorax or beneath the pectorial fins.

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

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..

Cucullated :: Cucullated (a.) Having the prothorax elevated so as to form a sort of hood, receiving the head, as in certain insects..

Prothorax :: Prothorax (n.) The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.

Thoracic :: Thoracic (a.) Of or pertaining to the thorax, or chest..

Endothorax :: Endothorax (n.) An internal process of the sternal plates in the thorax of insects.

Mediastinum :: Mediastinum (n.) A partition; a septum; specifically, the folds of the pleura (and the space included between them) which divide the thorax into a right and left cavity. The space included between these folds of the pleura, called the mediastinal space, contains the heart and gives passage to the esophagus and great blood vessels..