hypocephalus
noun
hy·​po·​ceph·​a·​lus
plural hypocephali\ -​fəˌlī \
Definition of hypocephalus
: a circular sheet of papyrus containing extracts from the 162d chapter of the Book of the Dead stiffened with plastered linen and placed as an amulet under the head of an ancient Egyptian mummy in the coffin
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