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单词 parabola
释义

WordReference Random House Learner's Dictionary of American English © 2024
pa•rab•o•la /pəˈræbələ/USA pronunciation   n. [countable], pl. -las. 
  1. Mathematicsa curve that is the same shape as the path of an object thrown into the air and landing in another place.
par•a•bol•ic /ˌpærəˈbɑlɪk/USA pronunciation  adj. 

WordReference Random House Unabridged Dictionary of American English © 2024
pa•rab•o•la  (pə rab′ə lə),USA pronunciation n. [Geom.]
  1. Mathematicsa plane curve formed by the intersection of a right circular cone with a plane parallel to a generator of the cone;
    the set of points in a plane that are equidistant from a fixed line and a fixed point in the same plane or in a parallel plane. Equation:y2 = 2px or x2 = 2py. See diag. under conic section. 
  • Greek parabolé̄ an application. See parable
  • Neo-Latin
  • 1570–80

Collins Concise English Dictionary © HarperCollins Publishers::
parabola /pəˈræbələ/ n
  1. a conic section formed by the intersection of a cone by a plane parallel to its side. Standard equation: y² = 4ax, where 2a is the distance between focus and directrix
Etymology: 16th Century: via New Latin from Greek parabolē a setting alongside; see parable
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更新时间：2025/7/23 12:09:10