noun, plural sen·ior·i·ties for 2.
- the state of being senior; priority of birth; superior age.
- priority, precedence, or status obtained as the result of a person’s length of service, as in a profession, trade, company, or union: First choice of vacation time will be given to employees with seniority.
noun plural -ties
- the state of being senior
- precedence in rank, etc, due to senior status
n.“priority on office or service,” mid-15c., from Medieval Latin senioritas, from Latin senior (see senior (adj.)). Meaning “state or quality of being senior” is from 1530s. Length of service on a job. Seniority may be considered in making decisions about wages, layoffs, and other working conditions.