[ fyoo-muh-rohl ]
/ ˈfyu məˌroʊl /


a hole in or near a volcano, from which vapor rises.

Origin of fumarole

1805–15; < French fumerolle < Late Latin fūmāriōlum, diminutive of Latin fūmārium smoke chamber, equivalent to fūm(us) smoke + -ārium -arium; see -ole1

Related forms

fu·ma·rol·ic [fyoo-muh-rol-ik] /ˌfyu məˈrɒl ɪk/, adjective

Can be confused

caldera fumarole geyser volcano
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fumarole

British Dictionary definitions for fumarole


/ (ˈfjuːməˌrəʊl) /


a vent in or near a volcano from which hot gases, esp steam, are emitted

Derived Forms

fumarolic (ˌfjuːməˈrɒlɪk), adjective

Word Origin for fumarole

C19: from French fumerolle, from Late Latin fūmāriolum smoke hole, from Latin fūmus smoke
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for fumarole


[ fyōōmə-rōl′ ]

A vent in the surface of the Earth from which hot smoke and gases escape. Fumaroles are found on or near volcanoes, especially in areas where volcanic activity is in its later stages.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.