plural noun

: 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


New Latin, from hemi- entry 1 + chordata

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Cite this Entry

“Hemichordata.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Hemichordata. Accessed 28 Jan. 2023.

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