Acetylene (noun)

  1. A flammable gas with the chemical formula C2H2, used as a fuel and in organic synthesis.
  2. A chemical compound containing two carbon atoms and two hydrogen atoms, with the formula C2H2.


Derived from the french acétylène, formed from the prefix acét- (from acétique, 'acetic') + -ylène, from the greek hyle, 'matter'.


  1. Acetylene is commonly used in welding.
  2. The acetylene gas is highly flammable.
  3. The experiment was performed using a mixture of oxygen and acetylene.
  4. The acetylene torch is a very powerful tool in metalworking.
  5. Acetylene is a colorless, highly flammable gas.
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