prism

prism
[ˈprɪz(ə)m]
noun
  1. (Geometry)a solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms
    (几何)棱柱（体)，角柱（体）
    ■(Optics)a glass or other transparent object in this form, especially one that is triangular with refracting surfaces at an acute angle with each other and that separates white light into a spectrum of colours
    (光学)棱镜，折光物
    ■used figuratively with reference to the clarification or distortion afforded by a particular viewpoint
    (喻)（某种观点带来的）澄清（或歪曲）
    the prism of science.
    科学的剖析。
语源
  1. late 16th cent.: via late Latin from Greek prisma 'thing sawn', from prizein 'to saw'
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