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ozonide

n.
1.any of a class of unstable chemical compounds resulting from the addition of ozone to a double bond in an unsaturated compound

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    Idiom of the Day

    stop dead
    to stop very quickly or with great force
    The man stopped dead when he saw the bear in the middle of the road.



    1.
    The next participant in this village drama is the weather, which ________ a very significant part in English life.

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