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optical aberration

n.
1.an optical phenomenon resulting from the failure of a lens or mirror to produce a good image

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  • optical
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  • optic chiasma
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  • marchantia
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  • stereoscope
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  • gaucher's disease
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  • black catechu
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    Idiom of the Day

    pay in advance
    to pay for something before it is received or delivered
    I paid in advance for the frames for my pictures.



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