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Dictionary

con•choid

Pronunciation: (kong'koid), [key]
—n. Geom.
a plane curve such that if a straight line is drawn from a certain fixed point, called the pole of the curve, to the curve, the part of the line intersected between the curve and its asymptote is always equal to a fixed distance. Equation: r = b ± a sec θ.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Conchobar

conchoidal

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