Gerontocracy
/ˌdʒerənˈtɑːkrəsi/
Definition 1 of 1
Pro Tip 1/3Political Context
Used to describe governance, often implies outdated or conservative policies due to older leadership. 
The country's gerontocracy struggled to address the demands of its younger population.
Pro Tip 2/3Not Literal
Doesn't mean only the elderly hold power; can refer to influential senior figures in a system. 
The board has become a de facto gerontocracy, with longtime members holding sway.
Pro Tip 3/3Cultural Nuance
In some cultures, gerontocracy reflects respect for the wisdom of age, not just political power. 
The village's gerontocracy ensured the preservation of ancient traditions.