A measure of the amount of time a person has been a member of an organization, as compared to other members, and with an eye towards awarding privileges to those who have been members longer.

plural of seniority

plural of senior

(US, Canada) A tendency of seniors in high school or college to skip class or slack off due to a desire to move on, or because they have already been accepted by a college and their further academic performance is no longer as relevant.

A surname.

(now chiefly US) An old person. / Someone older than someone else (with possessive). / Someone seen as deserving respect or reverence because of their age.

Older; superior / Higher in rank, dignity, or office. / (US) Of or pertaining to a student's final academic year at a high school (twelfth grade) or university.

Third-person singular simple present indicative form of seniorize

simple past tense and past participle of seniorize

(rare, transitive, intransitive) To make or become senior. / (obsolete, intransitive) To exercise authority; to rule; to lord it.