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The god of thunder, and son of Odin.

The operation of puncturing the chest wall so as to let out liquids contained in the cavity of the chest.

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.

A division of cirripeds including those which have six thoracic segments, usually bearing six pairs of cirri. The common barnacles are examples.

Same as Stethometer.

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.

An extensive division of Crustacea, having a dorsal shield or carapec

The operation of opening the pleural cavity by incision.

Of or pertaining to a bed. [R.]

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.

A rare white earthy substance, consisting of the oxide of thorium; -- formerly called also thorina.

Of or pertaining to thorium; designating the compounds of thorium.

ack color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium.

A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum. Symbol Th. Atomic weight 232.0.

Any shrub or small tree which bears thorns; especially, any species of the genus Cratægus, as the hawthorn, whitethorn, cockspur thorn.

Having a head armed with thorns or spines. Thorn-headed worm (Zoöl.), any worm of the order Acanthocephala; -- called also thornhead.

A European skate (Raia clavata) having thornlike spines on its back.

Any one of several species of small, brilliantly colored American birds of the genus Rhamphomicron. They have a long, slender, sharp bill, and feed upon honey, insects, and the juice of the sugar cane.

e ovenbirds of the genus Furnarius). It builds a very large and complex nest of twigs and thorns in a bush or tree.

The turbot.