ichthyopterygium

noun

ich·​thy·​op·​te·​ryg·​i·​um

-jēəm

plural ichthyopterygia

-jēə

: the vertebrate limb when having the form of a fin whether as a definitive organ or in the course of individual or evolutionary development

especially : any of the paired fins that are the typical limbs of fishes compare chiropterygium

Word History

Etymology

New Latin, from ichthy- + Greek pterygion small wing, fin, diminutive of pteryg-, pteryx wing

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