protostome
/proh-tuh-stohm/US // ˈproʊ təˌstoʊm //
原生质体,原生动物,原生生物体,原生动物组
Definitions
n.名词 noun
- 1
Zoology.
- : any member of the lower invertebrate phyla in which the mouth appears before the anus during development, cleavage is spiral and determinate, and the coelom forms as a splitting of the mesoderm.
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