Definition of "omosternum" [o•mo•ster•num]

• The anterior element of the sternum which projects forward from between the clavicles in many batrachians and is usually tipped with cartilage. (noun)
• In many mammals, an interarticular cartilage, or bone, between the sternum and the clavicle. (noun)

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• "There is a pre-omosternum (o. st.) and a post-omosternum, sometimes termed a xiphisternum (x.)."
• "Next: Blomberg's toad and its omosternum-bearing buddies."
• "Blomberg's toad and its omosternum-bearing buddies: Tetrapod Zoology"