swamp gas
"Swamp gas" is primarily methane produced by the decay of organic material in wetlands, often noted for its distinctive odor.
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Definition
B2Environment
(common)A gas formed by the decomposition of plants in waterlogged areas, primarily consisting of methane.
Example
- The swamp gas emitted a strong, unpleasant odor.
- Swamp gas can sometimes create mysterious lights over marshy areas.
C1Chemistry
(technical, colloquial)Hydrogen sulfide, a gas with a characteristic rotten egg smell, often found in swamps.
Example
- Hydrogen sulfide, commonly referred to as swamp gas, is highly flammable.
C1Ufology
(sarcastic)A dismissive explanation used to debunk UFO sightings.
Example
- The mysterious lights in the sky were quickly dismissed as swamp gas by skeptics.
Similar
Terms that have similar or relatively close meanings to "swamp gas":
marsh gasswamp waterswamp gumswamp outfever swampswamp angelswamp oakignis fatuus