spiral (redirected from Spiral organ of Corti)

spiral

1. Geometry one of several plane curves formed by a point winding about a fixed point at an ever-increasing distance from it. Polar equation of Archimedes spiral: r = aθ; of logarithmic spiral: log r = aθ; of hyperbolic spiral: rθ = a, (where a is a constant)

2. another name for helix

3. a flight manoeuvre in which an aircraft descends describing a helix of comparatively large radius with the angle of attack within the normal flight range

4. Economics a continuous upward or downward movement in economic activity or prices, caused by interaction between prices, wages, demand, and production

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spiral [′spī·rəl]

(mathematics)

A simple curve in the plane which continuously winds about itself either into some point or out from some point.