- the production of immunity against the action of a poison by taking the poison in gradually increased doses.
Origin of mithridatism
1850–55; after Mithridates VI, said to have so immunized himself; see -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
- immunity to large doses of poison by prior ingestion of gradually increased doses
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
- Tolerance or immunity to a poison acquired by taking gradually larger doses of it.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.