Skip to Content


Pronunciation: mith'ri-da'tizm, mith-rid'a-tizm

Definition: Immunity against the action of a poison produced by small and gradually increasing doses of the same.

[Mithridates, King of Pontus (132–63 BCE), supposedly an unsuccessful suicide (by poison) because of repeated small doses taken to become invulnerable to assassination by poison]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.