The old notion as to "mithridatism" was that an animal or a man would have to be separately prepared and.    From Wordnik.com.  [More Science From an Easy Chair] Reference

This is the case of (relative) immunization or, as it is sometimes called, of mithridatism.    From Wordnik.com.  [Charles Richet - Nobel Lecture] Reference

One of my personal favorites in this category is mithridatism.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIX No 3] Reference

The question of whether proper names of people and places have a rightful place in a dictionary is probably an obsolete one: their presence was formerly justified on the grounds that as "words" they are far more frequent than many of the "legitimate" words, like elytron, greave, or mithridatism.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XVIII No 3] Reference