Occurring in Petroleum and Natural Gas
This page is the CodyCross answer for the clue below from Circus, Group 94, Puzzle 3 (Sword Swallower).
Question
Occurring in Petroleum and Natural Gas
Answer
PROPANE
Word Meaning:
PROPANE — (organic chemistry) An aliphatic hydrocarbon, C₃H₈, a constituent of natural gas.
Definitions from Wiktionary.