Definition of grandevity in US English:

grandevity

noun

rare
  • Great or old age.

Origin

Early 17th century; earliest use found in Henry Cockeram (fl. 1623–1658), lexicographer. From classical Latin grandaevitās great age from grandaevus + -tās.

Pronunciation

grandevity

/ɡranˈdɛvɪti/