omosternum

from The Century Dictionary.

• noun A median ossification developed in connection with the coracoscapular cartilages of a batrachian, supposed to represent the interclavicle of some other animals. See also cut under interclavicle.

from the GNU version of the Collaborative International Dictionary of English.

• noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

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