Pter`y*go*po"di*um (?), n.; pl. Pterygopodia (#). [NL., fr. Gr. , , a fin + , dim. of , , a foot.] Anat.

A specially modified part of the ventral fin in male elasmobranchs, which serves as a copulatory organ, or clasper.

 

© Webster 1913.

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