Enter a clue or pattern or both:
The Clue
Petroleum gases (7 letter answer)
The Answer
ETHENES
Tags
Notes
The answer ETHENES is so rare that it appears less than once every 2500 puzzles.
Definition
ETHENE as a noun:
1. (ethylene, ethene) = a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic