Definition of quadragenarian in English:

quadragenarian

noun

  • A person who is from 40 to 49 years old.

    • ‘Looking at himself in the mirror, he is amazed to see a quadragenarian.’

Origin

Mid 19th century: from late Latin quadragenarius (based on Latin quadraginta ‘forty’) + -an.

Pronunciation

quadragenarian

/ˌkwädrəjəˈnerēən//ˌkwɑdrədʒəˈnɛriən/