Pronunciation: (sēn-yôr'i-tē, -yor'-), [key]
—pl. -ties for 2.
1. the state of being senior; priority of birth; superior age.
2. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.