Definition of assistant noun from the Oxford Advanced Learner's Dictionary

        

    assistant

     noun
    noun
    BrE BrE//əˈsɪstənt//
     
    ; NAmE NAmE//əˈsɪstənt//
     
    People in schools, Job titles, In the store, School life
     
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  1. 1  a person who helps or supports somebody, usually in their job My assistant will now demonstrate the machine in action. a senior research assistant She works as a care assistant in an old people's home. see also graduate assistant, personal assistant, teaching assistant See related entries: Job titles, School life
  2. 2  (especially British English) = sales clerk, shop assistant an assistant in a department store Maybe one of our assistants can help you make your choice? Wordfinderassistant, buy, counter, display, fitting room, promotion, sale, shop, store, till See related entries: In the store
  3. 3(British English) a student at university or college who spends time in a foreign country teaching his or her own language in a school See related entries: People in schools
  4. Word Origin late Middle English: from Old French, or from medieval Latin assistent- ‘taking one's stand beside’, from the verb assistere, from ad- ‘to, at’ + sistere ‘take one's stand’.Extra examples I’ll ask my personal assistant to deal with this. I’m getting a new assistant next month. She had a clerical assistant to do her paperwork. She is assistant to the Production Manager. She took up a post as research assistant in the Department of Pharmacology. As well as the class teacher there is a part-time teaching assistant. He worked as an assistant to the Sales Director. She works as a care assistant in a nursing home. She’s a sales assistant in a department store. a research/​teaching assistant
See the Oxford Advanced American Dictionary entry: assistant