a vent or fissure in an area of recent volcanic activity, emitting steam, carbon dioxide, and, sometimes, other gases
Origin of mofetteFrench from Italian muffare, to be moldy from German muff, mold
- An opening in the earth from which carbon dioxide and other gases escape, usually marking the last stage of volcanic activity.
- The gases escaping from such an opening.
Origin of mofetteFrench gaseous exhalation from Italian moffetta diminutive of muffa mold, moldy smell probably of Germanic origin