VOLCANISM
Meaning of VOLCANISM in English
/vol"keuh niz'euhm/ , n. Geol.
the phenomena connected with volcanoes and volcanic activity.
Also, vulcanism .
[ 1865-70; VOLCAN(O) + -ISM ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012