Definition of curvature noun from the Oxford Advanced Learner's Dictionary

 

curvature

 noun
noun
BrE BrE//ˈkɜːvətʃə(r)//
 
; NAmE NAmE//ˈkɜːrvətʃər//
 
[uncountable, countable](specialist)
 
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the state of being curved; the amount that something is curved the curvature of the earth curvature of the spine The screen is made of stretched vinyl and has a slight curvature. Word Origin late Middle English: via Old French from Latin curvatura, from curvare ‘to bend’, from curvus ‘bent’.
See the Oxford Advanced American Dictionary entry: curvature