Xiphisternum
Pronunciation : Xiph"i*ster"num
Part of Speech : n.;
Etymology : [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 a.
Definition :
pl. Xiphisterna.
Source : Webster's Unabridged Dictionary, 1913