from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An opening in the earth from which carbon dioxide and other gases escape, usually marking the last stage of volcanic activity.
  • n. The gases escaping from such an opening.

from The Century Dictionary and Cyclopedia

  • n. An irrespirable gas escaping from the earth; a gas-spring.


French, gaseous exhalation, from Italian moffetta, diminutive of muffa, mold, moldy smell, probably of Germanic origin.
(American Heritage® Dictionary of the English Language, Fourth Edition)


Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.