- a flowering; blooming
- the time of flowering
- the peak or fulfillment, as of a career
- the changing of certain crystalline compounds to a whitish powder or powdery crust through loss of their water of crystallization
- the powder or crust thus formed
- Med. an eruption on the skin; rash or other skin lesion
Origin of efflorescenceFrench from Classical Latin efflorescens, present participle of efflorescere: see effloresce
- Botany A state or time of flowering.
- a. A gradual process of unfolding or developing.b. The point or time of greatest vigor; the culmination. See Synonyms at bloom1.
- Chemistry a. A deposit that results from the process of efflorescing. Also called bloom 1.b. The process of efflorescing.
- Medicine Redness, a rash, or an eruption on the skin.
salt efflorescence on a
- (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.
- (construction) 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.
- (geology) An encrustation of soluble salts, deposited on rock or soil by evaporation; often found in arid or geothermal environments.
- (metaphorical) Rapid flowering of a culture or civilisation etc.
- (pathology) A redness, rash, or eruption on the skin.