reverse curve


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reverse curve

[ri′vərs ′kərv]
(mathematics)
An S-shaped curve, that is, one having two arcs with their centers on opposite sides of the curve. Also known as S curve.
References in periodicals archive ?
The devices include centerlines; edge lines; horizontal alignment signs as advance warnings (including turn, curve, reverse turn, reverse curve, winding road, hairpin curve, or 270-degree loop), and advisory speed plaques supplementing the horizontal alignment signs.
At a bend in the Mississippi River, south of Cape Girardeau, Missouri, and north of Cairo, Illinois, the river flows in a broad, sweeping, reverse curve.
Crown molding has a reverse curve (called an "ogee") inspired by ancient Greek architecture.
What makes it attractive is the reverse curve of the headboard and the fretwork.