Etymology: Latin efflorescere - ex, out, florescere, to blossom
- (chemistry) 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.
- (botany) The production of flowers.
- (metaphorical) Rapid flowering of a culture or civilisation etc.
- (pathology) A redness, rash, or eruption on the skin.
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Full Definition of efflorescence