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diffraction grating

n.
1.optical device consisting of a surface with many parallel grooves in it

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Word of the Day

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  • diffraction
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  • diffidence
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  • difficulty
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  • diffuse
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  • diffusely
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  • diffuser
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  • ground sloth
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  • hemachatus
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  • cicadellidae
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  • skydiving
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  • embrocation
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  • feed
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  • electric burn
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  • superficiality
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  • amenableness
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    Idiom of the Day

    straight out
    plainly, in a way that hides nothing
    The man was told straight out that his work was not satisfactory.



    1.
    Although this antique clock hasn't been working for ages now it looks to me that its big hand is ________ from time to time.

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