- An antiantibody that is directed against an antitoxin and counteracts its effects.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for anti-antitoxin
They are, indeed, as vehemently anti-Pasteur and anti-antitoxin as the Zoophilist itself.Experiments on Animals