I. väl-ˈka-nik, vȯl- also -ˈkā- adjective
Date: 1774
1.
a. : of, relating to, or produced by a volcano
b. : characterized by volcanoes
a volcanic range
c. : made of materials from volcanoes
2. : explosively violent : volatile
volcanic emotions
• vol·ca·ni·cal·ly -ni-k(ə-)lē adverb
II. noun
Date: 1894
: a volcanic rock