1. Over or on the sternum. 2. Relating to the episternum.
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epi·ster·nal .ep-ə-'stərn-əl adj located on or above the sternum
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epi·ster·nal (ep″ĭ-sturґnəl) 1. situated on or over the sternum. 2. pertaining to the episternum.Medical dictionary. 2011.