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Bible Dictionaries
Parabola

Webster's Dictionary

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(1):

(n.) A kind of curve; one of the conic sections formed by the intersection of the surface of a cone with a plane parallel to one of its sides. It is a curve, any point of which is equally distant from a fixed point, called the focus, and a fixed straight line, called the directrix. See Focus.

(2):

(n.) One of a group of curves defined by the equation y = axn where n is a positive whole number or a positive fraction. For the cubical parabola n = 3; for the semicubical parabola n = /. See under Cubical, and Semicubical. The parabolas have infinite branches, but no rectilineal asymptotes.

Bibliography Information
Webster, Noah. Entry for 'Parabola'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/parabola.html. 1828.
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