1. the state of being older or having served longer than others
2. priority or precedence based on length of service or age
Usage: often used in workplace contexts

Examples

• She was promoted based on her seniority in the company.
• The layoffs were determined by seniority, with newest employees let go first.
• His seniority gave him first choice of vacation dates.
• The union contract protects workers based on seniority.
• Despite her talent, she had to wait her turn due to the seniority system.
• The senator’s seniority earned him a committee chairmanship.