| Definition of 'passive state' |
The Standard Electrical Dictionary |
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1. passive state
A state of a substance in virtue of which it is unattacked by a solvent which ordinarily would dissolve or attack it. Iron in strong nitric acid is unattacked or assumes the passive state. This particular case is supposed to be due to a coating of magnetic oxide, so that there would be properly speaking no question of a passive state, but only one of superficial protection.
The existence of a true passive state of any substance is very doubtful.
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Definitions of passive state
