nonlinearities

/ˌnɑnˈlɪniˌɛrətiz/
noun
  1. Situations or systems where the relationship between cause and effect is not proportional or predictable; small changes can lead to large or unexpected results.
    • In economics, nonlinearities can cause a small tax change to have a huge impact on consumer behavior.
    • The weather model struggled to predict the storm because of the many nonlinearities in the atmosphere.
    • Engineers had to account for nonlinearities in the bridge's materials to ensure it wouldn't collapse under stress.
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