|—n , pl -las, -le|
|a conic section formed by a plane that cuts both bases of a cone; it consists of two branches asymptotic to two intersecting fixed lines and has two foci. Standard equation: x²/a² -- y²/b² = 1 where 2a is the distance between the two intersections with the x-axis and b = a√(e² -- 1), where e is the eccentricity|
|[C17: from Greek huperbolē, literally: excess, extravagance, from |
|hyperbola (hī-pûr'bə-lə) Pronunciation Key
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Plural hyperbolas or hyperbolae (hī-pûr'bə-lē)
A plane curve having two separate parts or branches, formed when two cones that point toward one another are intersected by a plane that is parallel to the axes of the cones.