trochoidal

• a word derived from trochoid.
  trochoid

  noun

  a curve traced by a point on a radius or an extension of the radius of a circle that rolls, without slipping, on a curve, another circle, or a straight line. Equation: x = aθ − b sin θ, y = a − b cos θ.

Example Sentences

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trochoidal

The lines of the vessel are beautifully fair and fine, and are what J. Scott Russell has called “wave-lines,” or trochoidal lines, such as Rankine has shown to be the best possible for easy propulsion.

From A History of the Growth of the Steam-Engine by Robert H. Thurston

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