General Science

  • noun a delay in the response of an object to changes in the forces acting on it, especially magnetic forces


  • noun the way in which equilibrium is dependent on changes which take place as a situation, such as an economy, changes


  • A phenomenon in which an induced or observed effect remains after the inducing cause is removed. In this way, two physical quantities are related in a manner that depends on whether one is increasing or decreasing with respect to the other. There are various examples, including magnetic hysteresis, electric hysteresis, and thermal hysteresis.
  • A phenomenon in which the changes in the magnetization induced in a ferromagnetic material lag behind the changes in the magnetizing force. This phenomenon is observed below the curie point. Also called magnetic hysteresis.
  • Any phenomenon in which there is a lag between the cause and the induced or observed effect. For instance, the output of an instrument depending on whether the input resulted from an increase or a decrease from the previous value. Another example is the manner in which a thermostat utilizes the right amount of hysteresis to maintain the desired temperature. Too little hysteresis would result in constant switching between cycles, and too much would allow too large a temperature interval between cycles.
  • In an oscillator, an effect in which a given value of a functional parameter may result in multiple values of output power and/or frequency.

Health Economics

  • (written as Hysteresis)
    This is a term in economics that has been borrowed from physics. It refers to a situation in which the past history of a variable can affect its current value. For example, the longer the period one has been off work through sickness, the less likely you are to find employment (regardless of your current state of health).