Meaning of nongenary in English:

nongenary

Pronunciation /nɒnˈdʒiːn(ə)rɪ/

noun

rare
  • (The celebration of) a nine hundredth anniversary.

Origin

1960s; earliest use found in The New Statesman. From post-classical Latin nongenarius containing nine hundred (5th–6th cent.; from nongeni nine hundred each (5th–6th cent.; shortened from nongenteni from classical Latin nōngentī nine hundred (from novem nine + centum a hundred) + -ēnī, suffix forming distributive adjectives) + -arius), after centenary.