• synonyms


[an-tuh-seer-uh m]
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noun, plural an·ti·se·rums, an·ti·se·ra [an-tuh-seer-uh] /ˈæn təˌsɪər ə/.
  1. a serum containing antibodies, as antitoxins or agglutinins, obtained by inoculation of animals and used for injection into other animals to provide immunity to a specific disease.
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Origin of antiserum

First recorded in 1900–05; anti- + serum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for antiserum

Historical Examples

  • The antiserum used for the precipitin reaction was obtained by treating a rabbit with human blood serum.

    The Organism as a Whole

    Jacques Loeb

  • The Libby Photronreflectometer was used to measure the turbidities developed by the interaction of antigen and antiserum.

  • In every series of tests the amount of antiserum was held constant and the amount of antigen was varied.

  • More than two series, however, resulted in little or no improvement of the reactivity of the antiserum.

British Dictionary definitions for antiserum


noun plural -rums or -ra (-rə)
  1. blood serum containing antibodies against a specific antigen, used to treat or provide immunity to a disease
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

antiserum in Medicine


  1. A serum containing antibodies that are specific for one or more antigens.immune serum
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

antiserum in Science


Plural antiserums antisera
  1. Human or animal serum containing one or more antibodies that are specific for one or more antigens and are administered to confer immunity. The antibodies in an antiserum result from previous immunization or exposure to an agent of disease. See also acquired immunity.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.