Käyräkulmaisia

Käyräkulmaisia is Finnish for “curvilinear” in plural form. The term describes objects, shapes, or boundaries that are defined primarily by curves rather than by straight segments or sharp corners. It is formed from käyrä (curve) and kulmainen (related to angles or angles-made forms), with -sia as the plural partitive ending.

Use and contexts

In mathematics and geometry, käyräkulmaisia muotoja or käyräkulmaisia pintoja refers to shapes whose edges are composed of curved segments, such as circular arcs, ellipses, or splines. The term is commonly contrasted with suorakulmaisia or kulmikkaita forms, which are rectilinear or angular. In design, architecture, and urban planning, käyräkulmaisia features describe surfaces, silhouettes, or networks that exhibit curvature—for example, curved façades, rounded corners, or meandering road layouts.

Linguistic notes

Käyräkulmaisia is the plural partitive form of käyräkulmainen, the adjective meaning curvilinear. The word is specialized and most often found in technical or academic Finnish, particularly in geometry, engineering, architecture, and planning literature. In everyday language, speakers may use more general terms like käyrämuotoinen or simply curvilinear (loanword usage) depending on the context.

See also

käyräkulmainen, suorakulmainen, käyrä muoto.