a document given by an educational institution conferring a degree on a person or certifying that the person has satisfactorily completed a course of study.
2.
a document conferring some honor, privilege, or power.
3.
a public or official document, especially one of historical interest: a diploma from Carolingian times.
verb (used with object)
4.
to grant or award a diploma to.
Origin: 1635–45; < Latindiplōma a letter of recommendation, an official document < Greekdíplōma a letter folded double, equivalent to diplō-, variant stem of diploûn to double (derivative of diplóos; see diplo-) + -ma suffix of result
1640s, from L. diploma, from Gk. diploma "license, chart," originally "paper folded double," from diploun "to double, fold over," from diplos "double" + -oma. Specific academic sense is 1680s in English.