n. The science of authenticating, dating, and interpreting old official documents.
the GNU version of the Collaborative International Dictionary of English
n. The science of diplomas, or the art of deciphering ancient writings, and determining their age, authenticity, etc.; paleography.
The Century Dictionary and Cyclopedia
n. The science of diplomas, or of ancient writings, literary and public documents, letters, decrees, charters, codicils, etc., which has for its object to decipher such instruments, or to ascertain their authenticity, their date, signatures, etc.
Word Usage
"They want to pursue diplomatics, and be part of the negotiations, and at the same time, resource the resistance, resource the Shia militias that provide resistance to the coalition."