# lemniscate

[lem-nis-kit, lem-nis-keyt, -kit]

- a plane curve generated by the locus of the point at which a variable tangent to a rectangular hyperbola intersects a perpendicular from the center to the tangent. Equation: r2 = 2a2cosθ.

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## Origin of lemniscate^{}

Also called Bernoulli's lemniscate.

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## lemniscate

- a closed plane curve consisting of two symmetrical loops meeting at a node. Equation: (x ² + y ²)² = a ²(x ² – y ²), where a is the greatest distance from the curve to the origin. The symbol for infinity (∞) is an example

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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