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Definition of formaldehyde noun from the Oxford Advanced American Dictionary

     

    formaldehyde

     noun
    noun
    NAmE//fɔrˈmældəˌhaɪd//
     
    , NAmE//fərˈmældəˌhaɪd//
     
    [uncountable]
     
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  1. 1(symbol CH2O) a gas with a strong smell
  2. 2(technology formalin
    NAmE//ˈfɔrməlɪn//
     
    )     a liquid made by mixing formaldehyde and water, used for preserving biological specimens, making plastics, and as a disinfectant His most famous artistic offering consists of a dead shark floating in a tank of formaldehyde.
See formaldehyde in the Oxford Advanced Learner's Dictionary
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