A curvilinear term in mathematics is "Consisting of, bounded by, or characterized by a curved line." However, the definition of a quadratic is a second-order polynomial equation in a single variable
with
. A quadratic is a curvilinear term according to my definition, but a function like
would also fit the definition of curvilinear. So, your answer is
False, a quadratic and a curvilinear term are not the same.