episternum Anat.
(ɛpɪˈstɜːnəm)
[f. epi- + sternum.]
In mammals, the upper part of the sternum or breast-bone; in other animals, applied variously to certain structures adjoining the breast.
| 1855 Owen Skel. & Teeth 39 The long stem of the episternum covers the outer part of the groove, where it represents the keel of the sternum in birds. 1872 Nicholson Palæont. 369 Clavicles were present, as well as an interclavicle (episternum). |