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



    BrE BrE//ˈsiːniə(r)//
    ; NAmE NAmE//ˈsiːniər//
    People in schools, Old age, School life
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    older person
  1. 1  a person who is older than somebody else She was ten years his senior. My brother is my senior by two years. compare junior
  2. 2(especially North American English) = senior citizen See related entries: Old age
  3. higher rank
  4. 3  a person who is higher in rank or status She felt unappreciated both by her colleagues and her seniors.
  5. in sport
  6. 4adults or people who have reached an advanced level tennis coaching for juniors and seniors
  7. in school/college
  8. 5(British English) a child at a senior school; an older child in a school See related entries: People in schools, School life
  9. 6(in the US and some other countries) a student in the last year at a high school or college high school seniors compare sophomore See related entries: People in schools, School life
  10. Word Originlate Middle English: from Latin, literally ‘older, older man’, comparative of senex, sen- ‘old man, old’.
See the Oxford Advanced American Dictionary entry: senior