Definition of "acetylene" []

• A colorless, highly flammable or explosive gas, C2H2, used for metal welding and cutting and as an illuminant. Also called ethyne. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Also, much modern torch use acetylene is still made this way."
• "The cylinders contained acetylene, which is a highly energetic chemical."
• "The location is what we call a packaged gases or cylinder gases location that puts various types of gases, primarily acetylene, which is used for welding, but other types of gases as well into cylinders for distribution to customers."