PARABOLAS

Noun

parabolas

plural of parabola

Source: Wiktionary


PARABOLA

Pa*rab"o*la, n.; pl. Parabolas. Etym: [NL., fr. Gr. Parable, and cf. Parabole.] (Geom.) (a) 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. (b) 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 = Cubical, and Semicubical. The parabolas have infinite branches, but no rectilineal asymptotes.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

15 March 2025

TRUNCATION

(noun) the replacement of an edge or solid angle (as in cutting a gemstone) by a plane (especially by a plane that is equally inclined to the adjacent faces)


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