ra·​dio-ul·​na ˌrā-dē-ō-ˈəl-nə How to pronounce radio-ulna (audio)
variants or radioulna
plural radio-ulnas or radioulnas
: 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

Word History


New Latin

First Known Use

1897, in the meaning defined above

Time Traveler
The first known use of radio-ulna was in 1897

Dictionary Entries Near radio-ulna

Cite this Entry

“Radio-ulna.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2024.

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