senior Meaning, Definition & Usage

  1. noun an undergraduate student during the year preceding graduation
  2. noun a person who is older than you are
    elder.
  3. adjective older; higher in rank; longer in length of tenure or service
    • senior officer
  4. adjective satellite used of the fourth and final year in United States high school or college
    fourth-year.
    • the senior prom
  5. adjective satellite advanced in years; (`aged' is pronounced as two syllables)
    aged; elderly; older.
    • aged members of the society
    • elderly residents could remember the construction of the first skyscraper
    • senior citizen

WordNet

Sen"ior adjective
Etymology
L. senior, compar. of senex, gen. senis, old. See Sir.
Definitions
  1. More advanced than another in age; prior in age; elder; hence, more advanced in dignity, rank, or office; superior; as, senior member; senior counsel.
  2. Belonging to the final year of the regular course in American colleges, or in professional schools.
Sen"ior noun
Definitions
  1. A person who is older than another; one more advanced in life.
  2. One older in office, or whose entrance upon office was anterior to that of another; one prior in grade.
  3. An aged person; an older. Dryden.
    Each village senior paused to scan, And speak the lovely caravan. Emerson.
  4. One in the fourth or final year of his collegiate course at an American college; -- originally called senior sophister; also, one in the last year of the course at a professional schools or at a seminary.

Webster 1913