Where does “vulkanisme” come from?

vulkanisme (Norwegian Bokmål) comes from Norwegian Bokmål -isme, from French -ïsme, from Latin -isma, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

vulkanisme (Norwegian Bokmål): volcanism

Definitions

volcanism

Ancestry of “vulkanisme”, step by step

Step	Language	Word	Meaning
1	Norwegian Bokmål	-isme	-ism
2	French	-ïsme	-ism, variant of -isme following vowels
3	Latin	-isma	Alternative form of -ismus; -ism
4	Latin	-ismus	-ism
5	Ancient Greek	-ισμός	Forms abstract nouns
6	Ancient Greek	-μός	Forms abstract nouns
7	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

Every word from Proto-Indo-European -mós →Every word from French -ïsme →Every word from Ancient Greek -μός →