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serum

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se⋅rum

  [seer-uhm]
Use serum in a Sentence
–noun, plural se⋅rums, se⋅ra  [seer-uh] .
1. the clear, pale-yellow liquid that separates from the clot in the coagulation of blood; blood serum.
2. immune serum.
3. any watery animal fluid.
4. the thin, clear part of the fluid of plants.
5. milk whey.
Origin:
1655–65; < L: whey

Related forms:
se⋅rum⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Serum
Buy serum from Darphin for a healthy-looking complexion.
www.Darphin.com
Human Plasma and Serum
Supplies Researchers with Human Plasma, Serum and Blood Products.
www.innov-research.com
se·rum   (sîr'əm)   
n.   pl. se·rums or se·ra (sîr'ə)

  1. The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot. Also called blood serum.

  2. Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual.

  3. Watery fluid from animal tissue, such as that found in edema.

  4. Whey.


[Latin, whey, serum.]
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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Word Origin & History

serum 
1672, "watery animal fluid," from L. serum "watery fluid, whey," from PIE base *ser-/*sor- "to run, flow" (cf. Gk. oros "whey;" Skt. sarah "flowing," sarit "brook, river"). First applied 1893 to blood serum used in medical treatments.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: 1se·rum
Pronunciation: 'sir-&m
Function: noun
Inflected Form: plural serums or se·ra /-&/
: the watery portion of an animal fluid remaining after coagulation: a (1) : the clear yellowish fluid that remains from blood plasma after fibrinogen,prothrombin, and other clotting factors have been removed by clot formation called also blood serum (2) : ANTISERUM b : a normal or pathological serous fluid (as in a blister)

Main Entry: 2serum
Function: adjective
: occurring or found in the serum of the blood <serum cholesterol> <serum glutamic-oxaloacetictransminase>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

serum se·rum (sēr'əm)
n. pl. se·rums or se·ra (sēr'ə)

  1. A watery fluid, especially one that moistens the surface of serous membranes or that is exuded by such membranes when they become inflamed.

  2. The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components.

  3. Such fluid from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
serum   (sîr'əm)  Pronunciation Key 
Plural serums or sera

  1. See blood serum.

  2. Blood serum extracted from an animal that has immunity to a particular disease. The serum contains antibodies to one or more specific disease antigens, and when injected into humans or other animals, it can transfer immunity to those diseases.


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

serum

the portion of plasma remaining after coagulation of blood, during which process the plasma protein fibrinogen is converted to fibrin and remains behind in the clot. Antiserum, which is prepared from the blood of animals or humans that have been exposed to a disease and have developed specific antibodies, is used to protect persons against disease to which they have been exposed.

Learn more about serum with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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