adjective. characterized by or following a curved line.
Sentences with curvilinear
A spline is a curvilinear line, and it is one of the most useful line tools when tracing an image.
2. Verb, base form
One is that the relationship is in fact linear rather than, say, curvilinear, as when y varies with some exponential power of x.
3. Noun, singular or mass
The team at Aluminr even went the extra mile by rendering curvilinear, art deco-friendly shapes in a lustrous bronze.