Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Botany A state or time of flowering; anthesis.
  • n. A gradual process of unfolding or developing.
  • n. The highest point; the culmination. See Synonyms at bloom1.
  • n. Chemistry The deposit that results from the process of efflorescing. Also called bloom1.
  • n. Chemistry The process of efflorescing.
  • n. Chemistry A growth of salt crystals on a surface caused by evaporation of salt-laden water.
  • n. Pathology Redness, a rash, or an eruption on the skin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.
  • n. The production of flowers.
  • n. 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.
  • n. An encrustation of soluble salts, deposited on rock or soil by evaporation; often found in arid or geothermal environments.
  • n. Rapid flowering of a culture or civilisation etc.
  • n. A redness, rash, or eruption on the skin.

from the GNU version of the Collaborative International Dictionary of English

  • n. Flowering, or state of flowering; the blooming of flowers; blowth.
  • n. A redness of the skin; eruption, as in rash, measles, smallpox, scarlatina, etc.
  • n.
  • n. The formation of the whitish powder or crust on the surface of efflorescing bodies, as salts, etc.
  • n. The powder or crust thus formed.

from The Century Dictionary and Cyclopedia

  • n. The act of effiorescing or blossoming out; also, an aggregation of blossoms, or an appearance resembling or suggesting a mass of flowers.
  • n. In botany, the time or state of flowering; anthesis.
  • n. In medicine, a redness of the skin; a rash; eruption, as in measles, smallpox, scarlatina, etc.
  • n. In chem., the formation of small white threads or spiculæ, resembling the sublimated matter called flowers, on the surface of certain bodies, as salts, or on the surface of any permeable body or substance; the incrustation so formed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the time and process of budding and unfolding of blossoms
  • n. any red eruption of the skin
  • n. the period of greatest prosperity or productivity
  • n. a powdery deposit on a surface

Etymologies

Latin efflorescere - ex, out, florescere, to blossom (Wiktionary)

Examples

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  • The rosy efflorescence of the peonies floated above the table. Cld Comfort Farm.

    February 23, 2013

  • ""Oh! not in the least," exclaimed Mme de Guermantes, who had a keen sense of these provincial differences and drew portraits that were sober and restrained but coloured by her husky, golden voice, beneath the gentle efflorescence of her violet-blue eyes."

    --The Captive & The Fugitive by Marcel Proust, translated by C.K. Scott Moncrieff and Terence Kilmartin, revised by D.J. Enright, p 794 of the Modern Library paperback edition

    February 20, 2010