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Dialyses - 3 dictionary results
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di⋅al⋅y⋅sis

   [dahy-al-uh-sis]
–noun, plural -ses  [-seez] .
1. Physical Chemistry. the separation of crystalloids from colloids in a solution by diffusion through a membrane.
2. Biochemistry. the separation of large molecules, as proteins, from small molecules and ions in a solution by allowing the latter to pass through a semipermeable membrane.
3. Medicine/Medical. (in kidney disease) the process by which uric acid and urea are removed from circulating blood by means of a dialyzer.
Origin:
1580–90; < LL < Gk diálysis a separation. See dia-, -lysis
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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di·al·y·sis     (dī-āl'ĭ-sĭs)  Pronunciation Key 
n.   pl. di·al·y·ses (-sēz')
  1. The separation of smaller molecules from larger molecules or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane.
  2. Hemodialysis.


[Greek dialusis, separating, dissolution, from dialūein, to break up, dissolve : dia-, apart; see dia- + lūein, to loosen; see leu- in Indo-European roots.]

di'a·lyt'ic (-ə-lĭt'ĭk) adj., di'a·lyt'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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dialysis   (dī-āl'ĭ-sĭs)  Pronunciation Key 
  1. The separation of the smaller molecules in a solution from the larger molecules by passing the solution through a membrane that does not allow the large molecules to pass through.
  2. A medical procedure in which this technique of molecular separation is used to remove metabolic waste products or toxic substances from the blood. Dialysis is required for individuals with severe kidney failure.

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