Definition of Peaucellier in US English:



  • Attributive and in the genitive. Designating a linkage consisting of a jointed rhombus of which two opposite vertices are linked to a fixed point by bars of equal length, resulting in the property that when one of the other two vertices is moved to trace out a curve, the other traces out the inverse curve.


Late 19th century. From the name of Charles Nicolas Peaucellier, French engineer, who invented the device in 1864.