What is another word for circle of curvature?
Pronunciation: [sˈɜːkə͡l ɒv kˈɜːvət͡ʃə] (IPA) 
Circle of curvature refers to the circle that best approximates curvature at a given point on a curve. A synonym for circle of curvature is osculating circle, derived from the Latin term "osculare," meaning "to kiss." This term reflects the notion of the osculating circle "kissing" the curve at the given point. Another synonym for circle of curvature is the radius of curvature, referring to the radius of the osculating circle. Furthermore, the term "curvature circle" may also be used to describe the circle of curvature. All of these terms are used interchangeably in the study of differential geometry and calculus.
