Enter a clue or pattern or both:
The Clue
Welding gas (9 letter answer)
The Answer
ACETYLENE
Tags
Notes
The answer ACETYLENE is rarely seen, appearing only about once every 2400 puzzles.
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Gas used in welding
Definition
ACETYLENE as a noun:
1. (acetylene, ethyne, alkyne) = a colorless flammable gas used chiefly in welding and in organic synthesis