episternumPronunciation: /ˌɛpɪˈstəːnəm/Definition of episternum noun (plural episternums or episterna /-nə/) Zoology a bone between the clavicles, especially (in mammals) the upper part of the sternum. (in insects) the anterior part of the side wall of a thoracic segment. episternum in other Oxford dictionaries Definition of episternum in the US English dictionary
