noun
- A volcanic vent or fissure that emits noxious gases, especially carbon dioxide, rather than lava or hot water.
Usage: geology; also spelled mofette
Examples
- The moffette released a steady stream of carbon dioxide into the atmosphere.
- Geologists studied the moffette to understand volcanic gas emissions.
- The region's moffettes are a distinctive feature of its geothermal landscape.
- Plants near the moffette struggled to survive due to the toxic gases.