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[dip-luh-mat-iks] /ˌdɪp ləˈmæt ɪks/
noun, (used with a singular verb)
the science of deciphering old official documents, as charters, and of determining their authenticity, age, or the like.
1785-95; see diplomatic, -ics Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for diplomatics


noun (functioning as sing)
the critical study of historical documents
a less common word for diplomacy
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
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Encyclopedia Article for diplomatics

the study of documents. The term is derived from the Greek word diploma, meaning "doubled" or "folded." Besides the documents of legal and administrative import withwhich it is properly concerned, diplomatics also includes the study of other records such as bills, reports, cartularies, registers, and rolls. Diplomatics is therefore a basic and not simply an auxiliary historical science.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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