swamp gas
биогаз
Wetterballon
Gases emitted from a swampGases emitted from a swamp.
Meaning
3 senses(literally, uncountable)Gases emitted from a swamp.
Swamp gas occasionally catches fire. Sometimes lightning sets off a patch of swamp gas.
(colloquial, uncountable)Hydrogen sulfide.
(sarcastic, uncountable)A skeptical explanation that is provided in order to debunk a UFO sighting that a believer regards as ludicrous, illogical or disingenuous.
He explained away an especially peculiar sighting with another helping of good old swamp gas.
Origin
* (hydrogen sulfide): So called because it is often emitted from wetlands such as swamps a* (hydrogen sulfide): So called because it is often emitted from wetlands such as swamps as a result of anaerobic bacteria, and is responsible for their foul “rotten egg” odor.
Wiktionary, CC BY-SA 4.0 · source
Synonyms
6 synonymsWord family
1 related wordsRelatedwater fire
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable