gerontocracy

 
Pronunciation: /ˌdʒɛrənˈtɒkrəsi/

noun

  • a state, society, or group governed by old people.
  • [mass noun] government based on rule by old people.

Derivatives

gerontocrat

Pronunciation: /dʒɛˈrɒntəkrat/
noun

gerontocratic

Pronunciation: /-ˈkratɪk/
adjective

Origin:

mid 19th century: from Greek gerōn, geront- 'old man' + -cracy