Definition of thorax
1 : the part of the mammalian body between the neck and the abdomen; also : its cavity in which the heart and lungs lie
2 : the middle of the three chief divisions of the body of an insect; also : the corresponding part of a crustacean or an arachnid
Recent Examples of thorax from the Web
A beautiful sight marred by sliced thoraxes, blazing bullets and spurting gore.
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Origin and Etymology of thorax
Middle English, from Latin thorac-, thorax breastplate, thorax, from Greek thōrak-, thōrax
First Known Use: 15th century
THORAX Defined for English Language Learners
Definition of thorax for English Language Learners
: the part of an animal's body between the neck and the waist
: the middle section of an insect's body
THORAX Defined for Kids
Definition of thorax for Students
1 : the part of the body of a mammal that lies between the neck and the abdomen and contains the heart and lungs
2 : the middle of the three main divisions of the body of an insect
Medical Definition of thorax
1: the part of the mammalian body that is situated between the neck and the abdomen and supported by the ribs, costal cartilages, and sternum; also : thoracic cavity
2: the middle of the three chief divisions of the body of an insect; also : the corresponding part of a crustacean or an arachnid
Seen and Heard
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