The period during which a person, especially a historical figure, was known to be active or most productive; used in scholarship when exact birth and death dates are unknown.
Latin third-person singular of 'florere' (to bloom, flourish). Scholars adopted this term because it literally means 'he/she flourished,' perfectly capturing the idea of a person's productive years without requiring certainty about their lifespan.
When historians write 'fl. 1450,' they're using a Latin verb meaning 'bloomed'—it's a beautiful way to admit we don't know everything about someone while still honoring when they were most alive and active.
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