floruit

/ˈflɔruɪt/
noun
  1. The period during which a person, school, or movement was most active or flourishing, especially in historical contexts.
    • The floruit of ancient Greek philosophy is often placed in the 5th century BCE.
    • Historians debate the exact floruit of the artist, but most agree it was around 1500.
    • The museum exhibit focused on the floruit of the Roman Empire.
Antonyms
What does "floruit" mean? | whatsthatwordmean | whatsthatwordmean