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sphragistics

American  
[sfruh-jis-tiks] / sfrəˈdʒɪs tɪks /

noun

(used with a singular verb)
  1. the scientific study of seals or signet rings.


sphragistics British  
/ sfrəˈdʒɪstɪks /

noun

  1. (functioning as singular) the study of seals and signet rings

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of sphragistics

First recorded in 1830–40; see origin at sphragistic, -ics