ef‧flo‧res‧cence /ˌefləˈres
əns/
noun [uncountable] literary[
Date: 1600-1700;
Language: French;
Origin: Latin efflorescere 'to come into flower', from flos; ⇒ flora]
the action of something forming and developing, or the period of time when this happens:
There was an efflorescence of scientific publication in the period 1645-1660. [TahlilGaran] Dictionary of Contemporary English ▲