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n. (used with a sing. verb)
The study of seals and signets.
[French sphragistique, from Late Greek sphragistikos, of seals, from Greek sphragistos, stamped, sealed, from sphragis, seal.]
1. (Heraldry) (functioning as singular) the study of seals and signet rings
2. (Jewellery) (functioning as singular) the study of seals and signet rings
[C19: from Greek sphragistikos, from sphragizein to seal, from sphragis a seal]
the scientific study of seals and signet rings. — sphragistic, adj.See also: Seals