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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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  • diffidently
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  • diffident
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  • diffidence
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  • difficulty
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  • difficultness
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  • difficult
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  • differently
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  • diffuse
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  • diffuse nebula
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  • diffused
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  • diffusely
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  • diffuseness
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  • diffuser
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  • diffusing
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  • diffusing screen
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  • diffusion
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  • diffusion pump
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  • gargantuan
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  • handclap
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  • turkish lira
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  • emphasizing
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  • felled
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    Idiom of the Day

    from the heart
    sincerely, honestly
    The boy gave his girlfriend some flowers with a message from the heart.



    1.
    (1) Fair play demands that
    (P) which may tend to give a poor impression
    (Q) before any comments are made
    (R)the person 'concerned should be asked
    (S) about a person
    (6) to give his side of the story.

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