noun ba·sip·ter·yg·i·um \-jēəm\

Definition of basipterygium



  1. :  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 — more at pterygium

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to cast off or become cast off

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