floruit Look up floruit at Dictionary.com
used now mainly in sense of "period during which a historical person's life work was done," 1843, Latin, literally "he flourished," third person singular perf. indicative of florere (see flourish (v.)). Usually in abbreviation fl. The third person singular present subjunctive of the verb, floreat, sometimes is attached to proper names "to indicate the hope that the named person, institution, etc., may prosper" [OED].