SYN: viscerocranium.
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splanch·no·cra·ni·um .splaŋk-nō-'krā-nē-əm n, pl -ni·ums or -nia -nē-ə the portion of the skull that arises from the first three branchial arches and forms the supporting structure of the jaws
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n.
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splanch·no·cra·ni·um (splank″no-kraґne-əm) viscerocranium.Medical dictionary. 2011.