Pronunciation: (an'tu-sēr"um), [key]
—pl. -se•rums, -se•raPronunciation: (-sēr"u). [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.