fumarole's Usage Examples:

Sulphur is said to be found at Herat, dug from the soil in small fragments, but the chief supply comes from the Hazara country and from Pirkisri, on the confines of Seistan, where there would seem to be a crater, or fumarole.

The temperature of the vapour within the fumarole was 184°, and water boiled at 189°.

fumarole temperature and seismicity are shown and discussed.

These clays are produced by the decomposition of the granite by acid vapours, which are discharged after the igneous rock has solidified ("fumarole or pneumatolytic action").

The temperature of the vapour within the fumarole was 184°, and water boiled at 189°.