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Stethoscope :: Stethoscope (n.) An instrument used in auscultation for examining the organs of the chest, as the heart and lungs, by conveying to the ear of the examiner the sounds produced in the thorax..

Thorax :: Thorax (n.) A breastplate, cuirass, or corselet; especially, the breastplate worn by the ancient Greeks..

Thorax :: 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..

Truncus :: Truncus (n.) The thorax of an insect. See Trunk, n., 5..

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

Abdomen :: Abdomen (n.) The belly, or that part of the body between the thorax and the pelvis. Also, the cavity of the belly, which is lined by the peritoneum, and contains the stomach, bowels, and other viscera. In man, often restricted to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity..

Sphex :: Sphex (n.) Any one of numerous species of sand wasps of the genus Sphex and allied genera. These wasps have the abdomen attached to the thorax by a slender pedicel. See Illust. of Sand wasp, under Sand..

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..

Horn :: Horn (n.) Any natural projection or excrescence from an animal, resembling or thought to resemble a horn in substance or form; esp.: (a) A projection from the beak of a bird, as in the hornbill. (b) A tuft of feathers on the head of a bird, as in the horned owl. (c) A hornlike projection from the head or thorax of an insect, or the head of a reptile, or fish. (d) A sharp spine in front of the fins of a fish, as in the horned pout..

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

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

Prosoma :: Prosoma (n.) The anterior of the body of an animal, as of a cephalopod; the thorax of an arthropod..

Echoscope :: Echoscope (n.) An instrument for intensifying sounds produced by percussion of the thorax.

Corselet :: Corselet (n.) The thorax of an insect.

Pleural :: Pleural (a.) Of or pertaining to the pleura or pleurae, or to the sides of the thorax..

Entothorax :: Entothorax (n.) See Endothorax.

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

Cephalothorax :: Cephalothorax (n.) The anterior portion of any one of the Arachnida and higher Crustacea, consisting of the united head and thorax..

Succussive :: Succussion (n.) The act of shaking; a shake; esp. (Med.), a shaking of the body to ascertain if there be a liquid in the thorax..

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..

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