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optical phenomenon

n.
1.a physical phenomenon related to or involving light

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Word of the Day

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  • optical opacity
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  • optical maser
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  • optical lens
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  • optical instrument
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  • optical illusion
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  • optical glass
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  • optical fusion
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  • optical flint
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  • optical fibre
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  • optical fiber
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  • optical prism
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  • optical pyrometer
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  • optical telescope
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  • optically
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  • optician
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  • optimal
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  • optimally
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  • optimisation
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  • optimise
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  • ash-leaved maple
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  • thymidine
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  • writhed
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  • glabrescent
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  • breaking wind
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  • histology
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  • jebel musa
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  • whipper
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  • auricular point
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  • pinus
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    Idiom of the Day

    no ifs, ands, or buts about it
    absolutely no discussion or doubts about something
    "You are going to bed now - no ifs, ands, or buts about it," said the mother to her child.



    1.
    The past participle of 'upset'is ________

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