Fuel Gas With Formula of CH4

This page is the CodyCross answer for the clue below from The Netherlands, Group 2116, Puzzle 2 (Vecht River Views).

Question is: Fuel Gas With Formula of CH4

and the answer is: METHANE

Word Meaning:

METHANE — (organic chemistry, uncountable) The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.

Definitions from Wiktionary.