xiphoid process

noun

: the third and lowest segment of the human sternum

Word History

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of xiphoid process was in 1873

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Cite this Entry

“Xiphoid process.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/xiphoid%20process. Accessed 4 Jul. 2026.

Medical Definition

xiphoid process

noun
: the smallest and lowest division of the human sternum that is cartilaginous early in life but becomes more or less ossified during adulthood

called also ensiform cartilage, ensiform process

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