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单词 quadric
释义

Definition of quadric in English:

quadric

adjective ˈkwɒdrɪkˈkwɑdrɪk
Geometry
  • (of a surface or curve) described by an equation of the second degree.

    (表面,曲线)二次的

    Example sentencesExamples
    • His doctorate was awarded by Leiden in 1870 for a dissertation Homography applied to the theory of quadric surfaces.
noun ˈkwɒdrɪkˈkwɑdrɪk
Geometry
  • A quadric surface or curve.

    二次曲面;二次曲线

    Example sentencesExamples
    • He also published a number of papers on the cubic surface, studying lines on the surface, and other topics such as the Schur quadric.
    • The book contains a wealth of information concerning the projective geometry of conics and quadrics.
    • His work in geometry included a study of conics, quadrics and projective geometry.
    • The equation of the scroll of tangents of the common curve of two quadrics is due to Cayley in 1850.

Origin

Mid 19th century: from Latin quadra 'square' + -ic.

Definition of quadric in US English:

quadric

adjectiveˈkwɑdrɪkˈkwädrik
Geometry
  • (of a surface or curve) described by an equation of the second degree.

    (表面,曲线)二次的

    Example sentencesExamples
    • His doctorate was awarded by Leiden in 1870 for a dissertation Homography applied to the theory of quadric surfaces.
nounˈkwɑdrɪkˈkwädrik
Geometry
  • A quadric surface or curve.

    二次曲面;二次曲线

    Example sentencesExamples
    • The book contains a wealth of information concerning the projective geometry of conics and quadrics.
    • His work in geometry included a study of conics, quadrics and projective geometry.
    • The equation of the scroll of tangents of the common curve of two quadrics is due to Cayley in 1850.
    • He also published a number of papers on the cubic surface, studying lines on the surface, and other topics such as the Schur quadric.

Origin

Mid 19th century: from Latin quadra ‘square’ + -ic.

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更新时间:2025/8/19 21:11:29