Hemichordata

plural noun

Hemi·​chordata

"+

: a division of Chordata usually considered both subphylum and class, including the Enteropneusta and Pterobranchia and in some classifications the Phoronidea, and comprising a group of vermiform marine animals that have in the proboscis an outgrowth of the pharyngeal wall which suggests and is probably homologous with the notochord of higher chordates

hemichordate

"+ 

noun or adjective

Word History

Etymology

New Latin, from hemi- entry 1 + chordata

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