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efflorescence

[ef-luh-res-uh ns] /ˌɛf ləˈrɛs əns/
noun
1.
the state or a period of flowering.
2.
an example or result of growth and development:
These works are the efflorescence of his genius.
3.
Chemistry.
  1. the act or process of efflorescing.
  2. the resulting powdery substance or incrustation.
4.
Pathology. a rash or eruption of the skin.
Origin of efflorescence
1620-1630
1620-30; < French < Medieval Latin efflōrēscentia. See effloresce, -ence
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for efflorescence

efflorescence

/ˌɛflɔːˈrɛsəns/
noun
1.
a bursting forth or flowering
2.
(chem, geology)
  1. the process of efflorescing
  2. the powdery substance formed as a result of this process, esp on the surface of rocks
3.
any skin rash or eruption
Derived Forms
efflorescent, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for efflorescence
n.

1620s, from French efflorescence, from Latin efflorescentem (nominative efflorescens), present participle of efflorescere (see effloresce).

Online Etymology Dictionary, © 2010 Douglas Harper
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efflorescence in Science
efflorescence
  (ěf'lə-rěs'əns)   
  1. A whitish, powdery deposit on the surface of rocks or soil in dry regions. It is formed as mineral-rich water rises to the surface through capillary action and then evaporates. Efflorescence usually consists of gypsum, salt, or calcite.

  2. See anthesis.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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