And nails for loosened spears, and thongs for shields, provide.
Thong seal (Zoöl.), the bearded seal. See the Note under Seal.
Tho"oid (?), a. [Gr. &?;, &?;, the jacal + -oid.] (Zoöl.) Of or pertaining to a group of carnivores, including the wovels and the dogs.
Thor (?), n. [Icel. þrs. Cf. Thursday.] (Scand. Myth.) The god of thunder, and son of Odin.
||Tho`ra*cen*te"sis (?), n. [NL., fr. Gr. &?; thorax + &?; pricking, ||from &?; to prick, stab.] (Surg.) The operation of puncturing the ||chest wall so as to let out liquids contained in the cavity of the ||chest. || Tho*rac"ic (?), a. [Cf. F. thoracique.] (Anat.) Of or pertaining to the thorax, or chest.
Thoracic duct (Anat.), the great trunk of the lymphatic vessels, situated on the ventral side of the vertebral column in the thorax and abdomen. See Illust. of Lacteal.
Tho*rac"ic, n. [Cf. F. thoracique.] (Zoöl.) One of a group of fishes having the ventral fins placed beneath the thorax or beneath the pectorial fins.
||Tho*rac"i*ca (?), n. pl. [NL.] (Zoöl.) A division of cirripeds ||including those which have six thoracic segments, usually bearing six ||pairs of cirri. The common barnacles are examples. || Tho`ra*com"e*ter (?), n. (Physiol.) Same as Stethometer.
Tho`ra*co*plas"ty (?), n. [Thorax + plasty.] (Med.) 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.
||Tho`ra*cos"tra*ca (?), n. pl. [NL. See Thorax, and Ostracoid, a.] ||(Zoöl.) An extensive division of Crustacea, having a dorsal shield or ||carapec&?; &?;&?;niting all, or nearly all, of the thoracic somites ||to the head. It includes the crabs, lobsters, shrimps, and similar ||species. || Tho`ra*cot"o*my (?), n. [Gr. &?;, &?;, thorax + &?; to cut.] (Surg.) The operation of opening the pleural cavity by incision.
Tho"ral (?), a. [L. torus a couch, bed.] Of or pertaining to a bed. [R.]
Tho"rax (?), n. [L., fr. Gr. &?;.] 1. (Anat.) 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 vertebræ, the ribs, and the sternum, and which the heart and lungs are situated; the chest.
In mammals the thoracic cavity is completely separated from the abdominal by the diaphragm, but in birds and many reptiles the separation is incomplete, while in other reptiles, and in amphibians and fishes, there is no marked separation and no true thorax.