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Webster 1913 Edition

Thorax

Tho′rax

,
Noun.
[L., fr. Gr. [GREEK].]
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 vertebrae, 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.
2.
(Zool.)
(a)
The middle region of the body of an insect, or that region which bears the legs and wings. It is composed of three united somites, each of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of
Coleoptera
.
(b)
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.
3.
(Antiq.)
A breastplate, cuirass, or corselet; especially, the breastplate worn by the ancient Greeks.

Webster 1828 Edition

Thorax

THO'RAX

,
Noun.
[L.] In anatomy, that part of the human skeleton which consists of the bones of the chest; also, the cavity of the chest.

Definition 2024

Thorax

Thorax

See also: thorax

German

Noun

Thorax m ‎(genitive Thoraxes, plural Thoraxe or Thoraces)

  1. (anatomy) thorax (region of the mammalian body)

Declension


This German entry was created from the translations listed at thorax. It may be less reliable than other entries, and may be missing parts of speech or additional senses. Please also see Thorax in the German Wiktionary. This notice will be removed when the entry is checked. (more information) July 2010

thorax

thorax

See also: Thorax

English

Diagram showing the thorax of an insect.

Noun

thorax ‎(plural thoraces or thoraxes)

  1. (anatomy) The region of the mammalian body between the neck and abdomen as well as the cavity containing the heart and lungs.
  2. (entomology and arachnology) The middle of three distinct divisions in an insect, crustacean or arachnid body.

Derived terms

Translations

region of the mammalian body
middle of three distinct divisions in an insect, crustacean or arachnid body

Finnish

Noun

thorax

  1. thorax

Declension

Inflection of thorax (Kotus type 5/risti, no gradation)
nominative thorax thoraxit
genitive thoraxin thoraxien
partitive thoraxia thoraxeja
illative thoraxiin thoraxeihin
singular plural
nominative thorax thoraxit
accusative nom. thorax thoraxit
gen. thoraxin
genitive thoraxin thoraxien
partitive thoraxia thoraxeja
inessive thoraxissa thoraxeissa
elative thoraxista thoraxeista
illative thoraxiin thoraxeihin
adessive thoraxilla thoraxeilla
ablative thoraxilta thoraxeilta
allative thoraxille thoraxeille
essive thoraxina thoraxeina
translative thoraxiksi thoraxeiksi
instructive — thoraxein
abessive thoraxitta thoraxeitta
comitative — thoraxeineen

Synonyms

French

Noun

thorax m ‎(plural thorax)

  1. thorax

Latin

Etymology

From Ancient Greek θώραξ ‎(thṓrax, “a breastplate, cuirass, corslet”)

Pronunciation

Noun

thōrax m ‎(genitive thōrācis); third declension

  1. (anatomy) chest, thorax
  2. breastplate, cuirass
  3. doublet, stomacher
  4. bust (statue)

Declension

Third declension.

Case Singular Plural
nominative thōrax thōrācēs
genitive thōrācis thōrācum
dative thōrācī thōrācibus
accusative thōrācem thōrācēs
ablative thōrāce thōrācibus
vocative thōrax thōrācēs

Synonyms

References

Portuguese

Noun

thorax m (plural thoraxes)

  1. Obsolete spelling of tórax (used in Portugal until September 1911 and died out in Brazil during the 1920s).

Etymology

From Ancient Greek θώραξ ‎(thṓrax, “a breastplate, cuirass, corslet”).

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