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peri·cra·ni·al -nē-əl adj
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n.
the periosteum of the skull.
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peri·cra·ni·um (per″e-kraґne-əm) [peri- + cranium] [TA] the external periosteum of the skull; called also periosteum externum cranii [TA alternative]. pericranial adjMedical dictionary. 2011.