[ non-lin-ee-ar-i-tee ]
/ ˌnɒn lɪn iˈær ɪ ti /
Mathematics. the quality of a function that expresses a relationship that is not one of direct proportion.
Electricity. deviation of an input-output relationship from one of direct proportionality.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for nonlinearity
Fredrickson then suggests that this counts as general evidence of nonlinearity in the effects of positivity.Barbara Fredrickson’s Bestselling ‘Positivity’ Is Trashed by a New Study|Will Wilkinson|August 16, 2013|DAILY BEAST