Xiphisternum | ‖n.; pl. Xiphisterna [ NL., fr. Gr. xi`fos a sword + sternum. ] (Anat.) (a) The posterior segment, or extremity, of the sternum; -- sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process. (b) The xiphiplastron. -- Xiph"i*ster"nal pos>a. [ 1913 Webster ] |