episternum Syllabification: (ep·i·ster·num)Pronunciation: /ˌepiˈstərnəm/Definition of episternum noun (plural episternums or episterna /-nə/) Zoology a bone between the clavicles, especially (in mammals) the upper part of the sternum. Entomology (in insects) the anterior part of the sidewall of a thoracic segment. episternum in other Oxford dictionaries Definition of episternum in the British & World English dictionary
