seal

authentication

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Related Topics:: signet; great seal; privy seal; kangōfu; seal engraving

seal, in documentation, an impression made by the impact of a hard engraved surface on a softer material such as wax or clay, producing a device in relief. Seals have been used since remote antiquity to authenticate documents. The study of seals, known as sigillography, is a major historical discipline.

This article was most recently revised and updated by Amy Tikkanen.