ethyne

Noun
  1. A colorless flammable gas used chiefly in welding and in organic synthesis (synset 114624920)
    is a type of: aliphatic compound - organic compound that is an alkane or alkene or alkyne or their derivative
    substance meronym: oxyacetylene - a mixture of oxygen and acetylene; used to create high temperatures for cutting or welding metals
    same as: acetylene, alkyne

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