Noah Webster
Curvilineal
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.