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n. pl. per·i·cra·ni·a (-nē-ə) The external periosteum that covers the outer surface of the skull. [New Latin pericrānium, from Greek perikrānion, from neuter of perikrānios, around the skull : peri-, peri- + krānion, cranium; see CRANIUM.] per′i·crani·al adj. |
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