de|po|lar|i|za|tion «dee POH luhr uh ZAY shuhn», noun.
the act or process of depolarizing or state of being depolarized: »
Even when a frog muscle is cooled to the freezing point of water, the depolarization of the muscle membrane throws the whole fiber into action within 40 thousandths of a second (Scientific American).
Useful english dictionary. 2012.