- 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
Examples from the Web for sternum
He lifted his t-shirt and showed us a long scar, running from sternum to waistband.Watching ISIS Come to Power Again
September 7, 2014
The point of the weapon was concealed by the sternum that it had penetrated with such surprising force.The Black and White Men Who Saved Martin Luther King’s Life
January 20, 2014
Then you get a gander at the full monty, as it were, and he looks like someone inflated him from the sternum down.The Christie Girth
December 14, 2012
He considers it the usual crazy talk until one night when his sternum is nearly crushed by a snarling, otherworldly apparition.A New ‘One Flew Over the Cuckoo’s Nest’: Victor LaValle’s ‘The Devil in Silver’
August 31, 2012
Lateroventral: the point of junction of sternum and pleurum.Explanation of Terms Used in Entomology
John. B. Smith
A red dab over the sternum, and on each arm in front of the deltoid.Castes and Tribes of Southern India
The sternum is pale, with a black edge and black stripe in the middle.
The sternum is as wide as long, widest opposite the second legs.
The sternum is widest at the second legs and narrows to a point behind.
- (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 ribsNontechnical name: breastbone
- the corresponding part in many other vertebrates
- a cuticular plate covering the ventral surface of a body segment of an arthropodCompare tergum
Word Origin and History for sternum
1660s, from Greek sternon "chest, breast, breastbone" (in Homer, only of males), from PIE *stre-to- "to stretch, extend," from a root meaning "flat surface," related to stornynai "to spread out" (see structure (n.)), on the notion of the chest as broad and flat, as opposed to the neck.
- 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
- 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.