swamp gas (English, noun)
expansion: swamp gas (uncountable)
Senses:
glosses: Gases emitted from a swamp.
tags: literally
uncountable
topics: chemistry
inorganic-chemistry
natural-sciences
physical-sciences
glosses: Hydrogen sulfide.
tags: colloquial
uncountable
topics: human-sciences
mysticism
mythology
philosophy
sciences
ufology
glosses: A skeptical explanation that is provided in order to debunk a UFO sighting that a believer regards as ludicrous, illogical or disingenuous.
tags: sarcastic
uncountable
Forms: