IPA: /ˈkɜːrvətʃər/
KK: /ˈkɜrvətʃər/
The state of being curved or the amount of bending in a shape or line.
The curvature of the road made it difficult to see the oncoming traffic.
Curvature is formed from "curv-" (from Latin "curvus", meaning bent or curved) and "-ature" (a suffix used to form nouns indicating a state or condition). The word "curvature" refers to the state or condition of being curved.
Think of something that is 'bent' ('curv-') to remember that 'curvature' describes the state of being curved.