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noun, plural serums, sera
[seer-uh] /ˈsɪər ə/ (Show IPA)
the clear, pale-yellow liquid that separates from the clot in the coagulation of blood; blood serum.
immune serum.
any watery animal fluid.
the thin, clear part of the fluid of plants.
milk whey.
noun (pl) -rums, -ra (-rə)
See blood serum
antitoxin obtained from the blood serum of immunized animals
(physiol, zoology) clear watery fluid, esp that exuded by serous membranes
a less common word for whey

serumal se·rum·al (sēr’ə-məl)
Relating to or derived from serum.

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

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

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

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

Plural serums or sera

See blood serum.

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.


Read Also:

  • Serum-albumin

    noun 1. Biochemistry. the principal protein of blood plasma, important in osmotic regulation of the blood and transport of metabolites. 2. the commercial form of this substance, used in dye preparations, foodstuffs, and in medicine especially in the treatment of shock. serum albumin noun 1. a form of albumin that is the most abundant protein […]

  • Serum-fast

    serum-fast adj. Relating to a serum showing little or no change in its antibody titer, even under conditions of treatment or immunologic stimulation.

  • Serum globulin

    noun 1. the blood serum component consisting of proteins with a larger molecular weight than serum albumin See also immunoglobulin serum globulin n. A protein fraction of serum composed chiefly of antibodies.

  • Serum-hepatitis

    noun 1. hepatitis B. serum hepatitis noun 1. a former name for hepatitis B serum hepatitis n. Abbr. SH See hepatitis B.

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