sternum
[ stur-nuh m ]
/ ˈstɜr nəm /
noun, plural ster·na [stur-nuh] /ˈstɜr nə/, ster·nums.
Anatomy, Zoology.
a bone or series of bones extending along the middle line of the ventral portion of the body of most vertebrates, consisting in humans of a flat, narrow bone connected with the clavicles and the true ribs; breastbone.
the ventral surface of a body segment of an arthropod.
Origin of sternum
1660–70; < New Latin < Greek
stérnon chest, breastbone
Words nearby sternum
Example sentences from the Web for sternum
British Dictionary definitions for sternum
sternum
/ (ˈstɜːnəm) /
noun plural -na (-nə) or -nums
(in man) a long flat vertical bone, situated in front of the thorax, to which are attached the collarbone and the first seven pairs of ribs
Nontechnical name: breastbone
the corresponding part in many other vertebrates
a cuticular plate covering the ventral surface of a body segment of an arthropod
Compare tergum
Derived forms of sternum
sternal, adjectiveWord Origin for sternum
C17: via New Latin from Greek
sternon breastbone
Medical definitions for sternum
sternum
[ stûr′nəm ]
n. pl. ster•nums
A long flat bone, articulating with the cartilages of the first seven ribs and with the clavicle, forming the middle part of the anterior wall of the thorax, and consisting of the corpus, manubrium, and xiphoid process.
breastbone
Scientific definitions for sternum
sternum
[ stûr′nəm ]
A long, flat bone located in the center of the chest, serving as a support for the collarbone and ribs. Also called breastbone See more at skeleton.