noun, plural xiphisterna [zif-uh-stur-nuh] . Anatomy.
the lowermost of the three segments of the sternum. Compare gladiolus ( def 2 ), manubrium ( def 2a ).

1855–60; < Neo-Latin xiphi- (combining form of Greek xíphos sword) + sternum sternum

xiphisternal, adjective
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World English Dictionary
xiphisternum (ˌzɪfɪˈstɜːnəm)
n , pl -na
anatomy, zoology xiphoid, Also called: xiphoid process the cartilaginous process forming the lowermost part of the breastbone (sternum)

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Medical Dictionary

xiphisternum xiph·i·ster·num (zĭf'ĭ-stûr'nəm)
See xiphoid process.

xiph'i·ster'nal adj.
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