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effloresce

 - 4 dictionary results

ef⋅flo⋅resce

[ef-luh-res]
–verb (used without object), -resced, -resc⋅ing.
1. to burst into bloom; blossom.
2. Chemistry.
a. to change either throughout or on the surface to a mealy or powdery substance upon exposure to air, as a crystalline substance through loss of water of crystallization.
b. to become incrusted or covered with crystals of salt or the like through evaporation or chemical change.

Origin:
1765–75; < L efflōrēscere to blossom out, equiv. to ef- ef- + flōrēscere to begin to bloom (flōr(i)-, s. of flōs flower + -ēscere -esce )
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ef·flo·resce   (ěf'lə-rěs')   
intr.v.   ef·flo·resced, ef·flo·resc·ing, ef·flo·resc·es
  1. To blossom; bloom.

  2. Chemistry

    1. To become a powder by losing water of crystallization, as when a hydrated crystal is exposed to air.

    2. To become covered with a powdery deposit.


[Latin efflōrēscere : ex-, ex- + flōrēscere, inchoative of flōrēre, to blossom (from flōs, flōr-, flower; see bhel-3 in Indo-European roots).]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ef·flo·resce
Pronunciation: "ef-l&-'res
Function: intransitive verb
Inflected Forms: -resced; -resc·ing
: to change to a powder from loss of water of crystallization
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

effloresce ef·flo·resce (ěf'lə-rěs')
v. ef·flo·resced, ef·flo·resc·ing, ef·flo·resc·es

  1. To blossom; bloom.

  2. To become a powder by losing water of crystallization, as when a hydrated crystal is exposed to air.


ef'flo·res'cence n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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