protocephalon

noun pro·to·cephalon \ ¦prōt(ˌ)ō+ \

Definition of protocephalon

plural protocephala
1 :the part of an insect embryo that consists of the prostomium and the first postoral somite
2 :the primitive arthropod head corresponding to the sensory as distinguished from the feeding portion of the head of higher forms — compare gnathothorax

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Origin and Etymology of protocephalon

New Latin, from prot- + cephalon


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