curvature
/ˈkɜːvətʃə(r)/noun
mass noun
1- the fact of being curved or the degree to which something is curved弯曲; 弯曲度：
spinal curvature
脊柱弯曲
the curvature of the earth
地球曲率
count noun it has a distinct curvature near the middle.中间部分有明显的弯曲。
1.1
- Geometry the degree to which a curve deviates from a straight line, or a curved surface deviates from a plane【几何】曲率, （曲线或弧形面）曲度。
1.2
- a numerical quantity expressing this曲率。
词源
late Middle English: via Old French from Latin curvatura, from curvare （see CURVE）.