Medical Dictionary


noun de·po·lar·iza·tion
variants: or British



Medical Definition of depolarization

  1. :  loss of polarization; especially :  loss of the difference in charge between the inside and outside of the plasma membrane of a muscle or nerve cell due to a change in permeability and migration of sodium ions to the interior … partial depolarization of the ventricular tissue resulting from rapid conduction of the electrical impulse from the atrium to the ventricle …—Mark S. Link, The New England Journal of Medicine, 11 Oct. 2012

Seen and Heard

What made you want to look up depolarization? Please tell us where you read or heard it (including the quote, if possible).


a favoring of the simplest explanation

Get Word of the Day daily email!