Sternum definition

stûrnəm
The 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.
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A long flat bone in most vertebrates that is situated along the ventral midline of the thorax and articulates with the ribs. The manubrium of the sternum articulates with the clavicles in humans and certain other vertebrates.
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The ventral portion of a body segment of an arthropod.
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A long flat bone in most vertebrates that is situated along the ventral midline of the thorax and articulates with the ribs. The manubrium of the sternum articulates with the clavicles in humans and certain other vertebrates.
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The ventral portion of a body segment of an arthropod.
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A long, flat bone located in the center of the chest, serving as a support for the collarbone and ribs.
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Other Word Forms

Noun

Singular:
sternum
Plural:
sternums

Origin of sternum

  • New Latin from Greek sternon breast, breastbone ster-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • 1660, from Neo-Latin sternum, from Ancient Greek στέρνον (stérnon, “chest, breastbone, heart"), from Proto-Indo-European *stern- (“forehead, chest, side"). Related to Old English steorn (“forehead"), German Stirn (“forehead").

    From Wiktionary