say it: nahn-LIN-ee-ur
nonlinear is an adjective meaning "designating or involving an equation whose terms are not of the first degree". It carries one recorded sense.
designating or involving an equation whose terms are not of the first degree
mathematics
Definitions, synonyms and semantic relations for nonlinear come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. .