formaldehyde

Noun
  1. A colorless poisonous gas;
    Made by the oxidation of methanol (synset 114897347)
    is a type of:
    • aldehyde - any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
    • gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
    same as: methanal

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