efflorescence

noun6

1. •
   The production of flowers.
2. •
   (figurative) Rapid flowering of a culture or civilisation etc.
3. •
   The formation of a powdery surface on crystals, as a hydrate is converted to anhydrous form by losing loosely bound water of crystallization to the atmosphere.
4. •
   An encrustation of soluble salts, commonly white, deposited on the surface of stone, brick, plaster, or mortar; usually caused by free alkalies leached from mortar or adjacent concrete as moisture moves through it.
5. •
   An encrustation of soluble salts, deposited on rock or soil by evaporation; often found in arid or geothermal environments.

   • I’d hoped that when the black hole of the Donald Trump presidency ended, redirected energy might allow for a cultural efflorescence. So far that hasn’t happened. — 2022
6. •
   A redness, rash, or eruption on the skin.