propterygium

noun prop·ter·yg·i·um

Definition of propterygium

plural

propterygia

\-ēə\
  1. :  the anterior of the three principal basal cartilages in the paired fins of some fishes (as sharks and rays) — compare basipterygium

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Origin and Etymology of propterygium

New Latin, from 1pro- + Greek pterygion fin, literally, small wing


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