1. A colorless, flammable gas (C₂H₂) produced by the incomplete combustion of carbon or by the reaction of calcium carbide with water; used in welding, cutting, and organic synthesis.
Usage: Also called acetylene; Chemistry term; IUPAC systematic name

Examples

• Ethyne is commonly used in oxy-acetylene welding torches.
• The chemical formula for ethyne is C₂H₂.
• Ethyne gas burns with a bright, sooty flame.
• Industrial production of ethyne involves the reaction of calcium carbide with water.
• Ethyne is an important feedstock in the chemical industry for making plastics and other compounds.