沼気

Etymology
→ →

From compound. Compare modern 🇨🇬 reading ziu2 hei3.

Noun

 * 1) marsh gas, swamp gas, methane

Usage notes
Although one translation of this term is, this refers more specifically to the methane produced from organic matter rotting in a body of water. One would not generally use this term to refer to methane or natural gas as used for cooking or heating.