thoracic

UK: /θɔːˈræsɪk/ US: /θəˈræsɪk/ ,(thô ras′ik, thō-)

WordReference Random House Unabridged Dictionary of American English © 2025

tho•rac•ic  (thô ras′ik, thō-), adj. 

1. Anatomy, Insects, Zoology of or pertaining to the thorax.

Also, tho•ra•cal  (thôr′ə kəl, thōr′-). 

• Greek thōrākikós. See thorac-, -ic
• Medieval Latin thōrācicus
• 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

thoracic / θɔːˈræsɪk/ adjective

1. of, near, or relating to the thorax

WordReference Random House Learner's Dictionary of American English © 2025

tho•rax /ˈθɔræks/   n. [countable] , pl. tho•rax•es, tho•ra•ces 

/ˈθɔrəˌsiz/ .
1. Anatomy the part of the trunk of the body between the neck and the abdomen, containing the heart and lungs:
   In mammals the thorax is separated from the lower trunk by the diaphragm.
2. Insects the portion of the body of an insect between the head and the abdomen.

tho•rac•ic /θəˈræsɪk/  adj. 

WordReference Random House Unabridged Dictionary of American English © 2025

tho•rax  (thôr′aks, thōr′-), n., pl. tho•rax•es, tho•ra•ces 

(thôr′ə sēz′, thōr′-). 
1. Anatomy the part of the trunk in humans and higher vertebrates between the neck and the abdomen, containing the cavity, enclosed by the ribs, sternum, and certain vertebrae, in which the heart, lungs, etc., are situated;
   chest.
2. Zoology a corresponding part in other animals.
3. Insects (in insects) the portion of the body between the head and the abdomen. See diag. under insect. 

• Greek thó̄rāx breastplate, part of body which this covers
• Latin thōrāx
• Middle English 1350–1400