xiphoid process 名詞
  劍突
  Xiph·i·ster·num n.; pl. Xiphisterna   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.
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  xiphoid process
       n : smallest of the three parts of the breastbone; articulates
           with the corpus sternum and the seventh rib