Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

thorax

play
noun tho·rax \ˈthō(ə)r-ˌaks, ˈthȯ(ə)r-\

Medical Definition of thorax

plural tho·rax·es or tho·ra·ces \ˈthōr-ə-ˌsēz, ˈthȯr-\play

  1. 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. 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

What made you want to look up thorax? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

100 pounds 16.96 pounds 2.2 pounds 196.5 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ