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nitric oxide

n.
1.a poisonous red-brown gas (NO)

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    Idiom of the Day

    hooked on (something)
    to be addicted to a drug or something similar, to be enthusiastic about something
    The man has been hooked on drugs since he was a teenager.



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    Invention
    Invention : carbon-14 dating
    Year : 1946
    Inventor : willard f. libby
    Country : us.      .. More >>
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