seniority

Definition of Seniority in English :

higher rank than that of others especially by reason of longer service

2. longevity, seniority

the property of being long-lived

WordNet Lexical Database for English. Princeton University. 2010.

Seniority

noun plural -ties

1.

the state of being senior

2.

precedence in rank, etc, due to senior status

nounWord forms: plural senˈiorities

1.

the state or quality of being senior; precedence in birth, rank, etc.

2.

status, priority, or precedence achieved by length of service, as in a given job

n.

1. The state of being older than another or others or higher in rank than another or others.

2. Precedence of position, especially precedence over others of the same rank by reason of a longer span of service.