seniority Syllabification: (sen·ior·i·ty)Pronunciation: /sēnˈyôritē, -ˈyär-/Translate seniority | into French | into German | into Italian | into Spanish Definition of seniority noun 1the fact or state of being older or higher in position or status than someone else:one by one, in order of seniority, employees' names were called 2a privileged position earned by reason of longer service or higher rank:pay and benefits rise with seniorityseniority in other Oxford dictionaries Definition of seniority in the British & World English dictionary