XIPHISTERNUM
Etymology
Noun
xiphisternum (plural xiphisterna or xiphisternums)
The xiphoid process, a small cartilaginous extension to the lower part of the sternum, usually ossified in the adult human.
Source: Wiktionary
Xiph"i*ster"num, n.; pl. Xiphisterna. Etym: [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.
Source: Webster’s Unabridged Dictionary 1913 Edition