Tetraphyllidea
noun plural
Tet·ra·phyl·lid·ea
| \ ˌte-trə-fi-ˈlid-ē-ə
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Medical Definition of Tetraphyllidea
: an order of the class Cestoda comprising tapeworms parasitic in elasmobranch fishes and distinguished by a scolex having four bothridia and sometimes also hooks or suckers for attachment to the host