radio-ulna

noun
ra·dio-ul·na | \ˌrā-dē-ō-ˈəl-nə \

Definition of radio-ulna 

: a single bone in the forelimb of an amphibian (such as a frog) that represents fusion of the separate radius and ulna of higher vertebrate forms

First Known Use of radio-ulna

1897, in the meaning defined above

History and Etymology for radio-ulna

New Latin

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The first known use of radio-ulna was in 1897

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