Of or relating to a fumarole or fumaroles.(adjective)
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Use "fumarolic" in a sentence
"They noted no fumarolic activity, although water vapor resulting from radiant heating of ice-cored moraines was observed."
"Note we are not necessarily talking about active volcanism either in the sense of fumarolic activity, eruption etc. but just high heat flows."
"I think that most of the Antarctic peninsual volcanoes would be classified as active with historic records of activity, particulalry fumarolic activity."