A document issued by an educational institution testifying that the recipient has earned a degree or has successfully completed a particular course of study.

plural of diploma

(hypercorrect) plural of diploma

Having an academic diploma.

(education, derogatory) A disreputable university, churning out diplomas to unqualified students.

plural of diploma mill

The art and practice of conducting international relations by negotiating alliances, treaties, agreements etc., bilaterally or multilaterally, between states and sometimes international organizations, or even between polities with varying status, such as those of monarchs and their princely vassals.

A person, such as an ambassador, who is accredited to represent a government officially in its relations with other governments or international organisations

Concerning the relationships between the governments of countries. / Exhibiting diplomacy; exercising tact or courtesy; using discussion to avoid hard feelings, fights or arguments.

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