Definition of Hemichordata in English:

Hemichordata

Syllabification: Hem·i·chor·da·ta
Pronunciation: /ˌhemikôrˈdātə
 
/
Zoology
  • A small phylum of marine invertebrates that comprises the acorn worms.
    More example sentences
    • The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.
    • The superphyla Deuterostomia (e.g., Chordata, Echinodermata, Hemichordata) and Protostomia each appear to have evolved from an ancestor with a coelomic body cavity.
    • Metamorphosis in the acorn worms (Hemichordata, Enteropneusta) includes retention of the entire larval body, which sheds feeding and propulsory cilia and undergoes definitive shape changes.

Origin

modern Latin (see hemi-, Chordata).

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