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⇱ conic section - WordReference.com Dictionary of English


WordReference Random House Unabridged Dictionary of American English © 2026
con′ic sec′tion, [Geom.]
  1. Mathematicsa curve formed by the intersection of a plane with a right circular cone;
    an ellipse, a circle, a parabola, or a hyperbola. Also called conic. 
  • 1655–65

Collins Concise English Dictionary © HarperCollins Publishers::
conic section n
  1. one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e, which is constant for a particular curve e = 0 for a circle; e<1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola
'conic section' also found in these entries (note: many are not synonyms or translations):

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