Oxford Dictionary English graduate assistant noun noun BrE BrE//ˌɡrædʒuət əˈsɪstənt// ; NAmE NAmE//ˌɡrædʒuət əˈsɪstənt// (especially North American English) Add to my wordlistjump to other resultsa postgraduate student at a university who is paid to help with teaching or research Graduate assistants in the department work 20 hours per week on designated projects.Check pronunciation: graduate assistant oxfordlearnersdictionaries.com