strophoid


strophoid
/strof"oyd, stroh"foyd/, n. Geom.
a plane curve generated by the loci of points p and pprime; on a straight line that intersects the y-axis at a point n and the minus x-axis at a fixed point q, such that pn = npprime; = on, as on changes, where o is the origin. Equation: y2 = x2(x+a)/(a-x).
[1875-80; < Gk stróph(os) twine + -OID, modeled on F strophoïde]

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Universalium. 2010.

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