spina interna

spina in·ter·na | \-inˈtərnə\
plural spinae internae\-rˌnē \

Definition of spina interna 

: a median bony point projecting from the anterior and dorsal edge of the sternum of a bird and sometimes uniting with the spina externa

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History and Etymology for spina interna

New Latin, internal spine

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one that holds something together

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