hyperbola
hʌɪˈpəːbələ/
noun
noun: hyperbola; plural noun: hyperbolae; plural noun:hyperbolas
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a symmetrical open curve formed by the intersection of a circular cone with a plane at a smaller angle with its axis than the side of the cone.
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MATHEMATICSthe pair of hyperbolas formed by the intersection of a plane with two equal cones on opposite sides of the same vertex.
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Origin
mid 17th century: modern Latin, from Greek huperbolē ‘excess’ (from huper ‘above’ + ballein ‘to throw’).
How my heart sings 