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dialysis - 8 dictionary results
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di⋅al⋅y⋅sis

  [dahy-al-uh-sis]
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–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
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Dialysis & Kidney Disease
Articles, Forums, Diet Tips & more Information for Dialysis Patients.
DaVita.com/Dialysis-Centers
Vascular Care
St. Joseph Hospital of Orange specializes in vascular care.
www.sjo.org
di·al·y·sis   (dī-āl'ĭ-sĭs)   
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 © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Dialysis

Di*al"y*sis\, n.; pl. Dialyses. [L., separation, fr. Gr. ?, fr. ? to part asunder, dissolve; dia` through + ? to loose.]

1. (Gram.) Di[ae]resis. See Di[ae]resis, 1.

2. (Rhet.) Same as Asyndeton.

3. (Med.) (a) Debility. (b) A solution of continuity; division; separation of parts.

4. (Chem.) The separation of different substances in solution, as crystalloids and colloids, by means of their unequal diffusion, especially through natural or artificial membranes.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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dialysis [(deye-al-uh-sis)]

The separation of large molecules from small molecules by passage through a membrane.

Note: A common treatment for kidney disease is the use of a dialysis machine to filter toxic substances from the blood, a function that the kidneys normally perform.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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dialysis 
1586, from Gk. dialysis "dissolution, separation," from dialyein "dissolve, separate," from dia- "apart" + lyein "loosen." Used originally in logic and grammar; chemistry sense is first recorded 1861, medicine 1914.
Online Etymology Dictionary, © 2001 Douglas Harper
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Main Entry: di·al·y·sis
Pronunciation: dI-'al-&-s&s
Function: noun
Inflected Form: plural di·al·y·ses /-"sEz/
1 : the separation of substances in solution by means of their unequal diffusion through semipermeable membranes;especially : such a separation of colloids from soluble substances
2 : either of two medical procedures to remove wastes or toxins from the blood and adjust fluidand electrolyte imbalances by utilizing rates at which substances diffuse through a semipermeable membrane: a : the process of removing blood from an artery (as of a kidney patient),purifying it by dialysis, adding vital substances, and returning it to a vein called also hemodialysis b : a procedure performed in the peritoneal cavity in which the peritoneumacts as the semipermeable membrane called also peritoneal dialysis —di·a·lyt·ic /"dI-&-'lit-ik/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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dialysis di·al·y·sis (dī-āl'ĭ-sĭs)
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. Also called diffusion.
  2. Hemodialysis.
di'a·lyt'ic (-ə-lĭt'ĭk) adj.

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