hemichordate

noun
hemi·chor·date | \ ˌhe-mi-ˈkȯr-dət , -ˈkȯr-ˌdāt \

Definition of hemichordate 

: any of a phylum (Hemichordata) of wormlike marine animals (such as an acorn worm) that have in the proboscis an outgrowth of the pharyngeal wall which superficially resembles the notochord of chordates

First Known Use of hemichordate

1885, in the meaning defined above

History and Etymology for hemichordate

New Latin Hemichordata, from hemi- + Chordata chordates

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The first known use of hemichordate was in 1885

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Britannica.com: Encyclopedia article about hemichordate

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