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roentgen

n.
1.a unit of radiation exposure
2.German physicist who discovered x-rays and developed roentgenography (1845-1923)

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    Idiom of the Day

    take it or leave it
    to accept something or forget it
    The customer was told to take it or leave it when he began to complain about the product.



    1.
    The baby had ________ quietly for two hours when it awoke.

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    The first city to reach a population of 1 million people was Rome, Italy in 133 B.C. London, England reached the mark in 1810 and New York, USA made it in 1875. Today, there are over 300 cities in the world that boast a population in excess of 1 million.      .. More >>
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