Hysteresis The lagging of an effect behind its cause. (1) In magnetism, lagging of the magnetization of a ferromagnetic material (such as iron) behind variations of an imposed magnetizing field. (2) In electronics (in particular, see Schmitt inverter), the property of a device to output a "high" value at an input voltage guaranteed to be higher than the input voltage at which it outputs a "low" value.

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