Definition of basipterygium
: a basal bone or cartilage forming a support of one of the paired fins of a fish: a : a large cartilage supporting the radialia in ganoids and selachians b : a large bone supporting the rays of a pelvic fin in teleosts c : the posterior member of a group of three such supporting elements in certain fishes — compare mesopterygium metapterygium propterygium
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Origin and Etymology of basipterygium
New Latin, from basi- + Greek pterygion fin, literally, small wing
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