senior meaning and definition

SENIOR noun

Definition of senior (noun)

1. an undergraduate student during the year preceding graduation
2. a person who is older than you are
   • synonyms: elder

SENIOR adjective

Definition of senior (adjective)

1. older; higher in rank; longer in length of tenure or service
   • "senior officer"
   • antonym: junior
2. used of the fourth and final year in United States high school or college
   • "the senior prom"
   • synonyms: fourth-year
3. advanced in years; (`aged' is pronounced as two syllables)
   • "aged members of the society"; "elderly residents could remember the construction of the first skyscraper"; "senior citizen"
   • synonyms: aged, elderly, older