[ an-tuh-seer-uhm ]
See synonyms for antiserum on
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.

Origin of antiserum

First recorded in 1900–05; anti- + serum Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use antiserum in a sentence

British Dictionary definitions for antiserum


/ (ˌæntɪˈsɪərəm) /

nounplural -rums or -ra (-rə)
  1. blood serum containing antibodies against a specific antigen, used to treat or provide immunity to a disease

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

Scientific definitions for antiserum


[ ăntĭ-sîr′əm ]

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.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.