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  1. microprism

    • IPA[ˈmʌɪkrə(ʊ)ˌprɪz(ə)m]

    英式

    • n.
      an area of the focusing screen of some reflex cameras which is covered with a grid of tiny prisms and splits up the image when the subject is not in focus.
    • noun: microprism, plural noun: microprisms