sternum Hear it!

sternum definition

ster·num (stʉr′nəm)

noun pl. sternums ster′·nums or sterna ster′na

a thin, flat structure of bone and cartilage to which most of the ribs are attached in the front of the chest in most vertebrates; breastbone

Etymology: ModL < Gr sternon, the breastbone < IE base *ster-, to spread out, strew

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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