The science of diplomas, or the art of deciphering ancient writings and determining their age, authenticity, etc.; paleography.

The science of authenticating, dating, and interpreting old official documents.

The collective body of foreign diplomats accredited to a particular country or body.

plural of diplomatic bag

A variety of bread and butter pudding.

The body of diplomats and foreign policy officers maintained by the government of a country to communicate with the governments of other countries.

plural of diplomatic service

A mixture of whipped cream and pastry cream

A practitioner of guerrilla diplomacy: an individual who seeks to solve a political-diplomatic issue or otherwise bring about change in international relations not merely through channels other than those of traditional diplomacy (e.g., diplomatic missions), but entirely unsponsored by any government and undirected by any government policy.

plural of diplomatic pouch