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  1. Oxford American Dictionary

    achromatic

    • IPA[ˌakrəˈmadik]

    美式

    • adj.
      relating to, employing, or denoting lenses that transmit light without separating it into constituent colors；without color
    • 釋義

    形容詞

    • 1. relating to, employing, or denoting lenses that transmit light without separating it into constituent colors achromatic microscopes a lens of achromatic construction
    • 2. literary without color achromatic gloom