Crossword clues for the word: ACETYLENE The word ACETYLENE has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for ACETYLENE Showing 1 to 8 of 8 results Clue(s) Colourless hydrocarbon gas used in welding and lighting Expert to start off in style with neon gas Gas made from limestone and coal Gas used in a blowtorch Illuminant gas Welder's gas Welder's need Welding need