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optical pyrometer

n.
1.a pyrometer that uses the color of the light emitted by a hot object

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Word of the Day

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  • optical prism
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  • Idiom of the Day

    have an edge on/over (someone or something)
    to have an advantage over someone or something
    Our team has an edge over the other teams to win the high school football championship. The boy has an edge on the others to win the spelling contest.



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    The weather has been dreadful ________ October

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