plural basipterygia
: a basal bone or cartilage forming a support of one of the paired fins of a fish:
: a large cartilage supporting the radialia in ganoids and selachians
: a large bone supporting the rays of a pelvic fin in teleosts
: the posterior member of a group of three such supporting elements in certain fishes compare mesopterygium, metapterygium, propterygium

Word History


New Latin, from basi- + Greek pterygion fin, literally, small wing

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Dictionary Entries Near basipterygium

Cite this Entry

“Basipterygium.” Dictionary, Merriam-Webster, Accessed 25 Sep. 2023.

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