isoclines
/ˈaɪsəˌklaɪnz/
noun
- Plural of isocline; lines on a map or graph connecting points of equal slope or inclination.
- The map was covered with isoclines showing areas of equal slope.
- In the math problem, we had to draw several isoclines for the differential equation.
- The geologist marked the isoclines on the field sketch.