di ‧ plo ‧ ma /dəˈpləʊmə, dɪˈpləʊmə $ -ˈploʊ-/ BrE AmE noun [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: 'passport, diploma' , from Greek , 'folded paper' ]
1 . British English a document showing that someone has successfully completed a course of study or passed an examination:
I’m hoping to get my teaching diploma this year.
diploma in
a diploma in catering
2 . American English a document showing that a student has successfully completed their ↑ high school or university education
high school/college diploma