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Tip: Use ? for unknown answer letters, e.g. AN??ER. Use the space bar to enter ? quickly.
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Tip: Use ? for unknown answer letters, e.g. AN??ER. Use the space bar to enter ? quickly.
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Clue: "C2H4"
"C2H4" is a New York Times crossword puzzle clue that we have seen 2 times. When there are multiple answers, the answers are sorted by the most recently seen.
Most likely answer
ETHYLENE
Possible answers
ETHYLENE
ETHENE
Likely related crossword puzzle clues
Flammable gas
Anesthetic gas
Hydrocarbon gas
Fruit-ripening gas
Gas used as an anesthetic
Emission of ripening fruit
Citrus colorant
___ glycol (antifreeze)
Colorless, flammable gas
Recent usage in crossword puzzles
New York Times -
February 16, 2008
New York Times -
January 12, 2001