noun di·ketene \(ˈ)dī+\

Definition of diketene

  1. :  an unsaturated pungent liquid lactone C4H4O2 made by spontaneous dimerization of ketene in solution and used chiefly in making derivatives of acetoacetic acid

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Origin and Etymology of diketene

di- + ketene

Seen and Heard

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a rounded knoll or a ridge of ice

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