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  1. Oxford Dictionary

    spherical aberration

    • n.
      a loss of definition in the image arising from the surface geometry of a spherical mirror or lens.

    • noun: spherical aberration, plural noun: spherical aberrations

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    spherical aberration

    • IPA[ˌsfirəkəl ˌabəˈrāSH(ə)n]

    美式

    • n.
      a loss of definition in the image arising from the surface geometry of a spherical mirror or lens.

    Oxford American Dictionary