Noah Webster
Curvilinear
CURVILINEAR, CURVILINEAL, adjective [Latin , bent and a line.] Having a curve line; consisting of curve lines; bounded by curve lines; as a curvilinear figure.
CURVILINEAR, CURVILINEAL, adjective [Latin , bent and a line.] Having a curve line; consisting of curve lines; bounded by curve lines; as a curvilinear figure.