a regression model or regression equation, when plotted, may assume one of many possible shapes, including a curve. A regression equation that gives a curve relationship between variables is called a nonlinear regression model
NONLINEAR REGRESSION MODEL
Meaning of NONLINEAR REGRESSION MODEL in English
Sean Woo's Finance, GIS and real estate English glossary. Английский глоссарий по ГИС(Географическая информационная система) и недвижимости Sean Woo's Finance. 2012