fumarole

词干

后缀

后缀

-ar: Of, near, or pertaining to; adjective suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.
-ola: Used to form the names of several commercial companies and products. · (entertainment industry) Used to form pejorative terms associated with commercial bribery.

Borrowed from Italian fumarola. Likely a doublet of femerell. By surface analysis, fume +‎ -ar +‎ -ola.