Definition of strophoid
: a plane curve that is generated by a point whose distance from the y-axis along a variable straight line which always passes through a fixed point is equal to the y-intercept and that has the equation ρ = α(sec θ ± tan θ) in polar coordinates
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Origin and Etymology of strophoid
French strophoïde, from Greek strophos twisted band (from strephein to twist) + French -oïde 2-oid — more at strophe
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