Définitions
1.AdjectiveOf a set of points, not lying on a straight line.
2.AdjectiveOf a molecule, whose atoms do not lie in a straight line.
3.AdjectiveOf a function, having a product of independent variables, or a variable with an exponent not equal to one.
4.AdjectiveOf a system, whose output is not directly proportional to its input.
5.AdjectiveErratic and unpredictable; tending to jump back and forth."a film with a nonlinear plot"