- blood serum containing antibodies against a specific antigen, used to treat or provide immunity to a disease
WordReference Random House Unabridged Dictionary of American English © 2026
an•ti•se•rum
(an′tə sēr′əm),USA pronunciation n., pl. -se•rums, -se•ra
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(-sēr′ə).USA pronunciation
- Drugsa 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.
- anti- + serum 1900–05
Collins Concise English Dictionary © HarperCollins Publishers::
antiserum /ˌæntɪˈsɪərəm/ n ( pl -rums, -ra /-rə/)
'antiserum' also found in these entries (note: many are not synonyms or translations):