Where does “Irvingism” come from?

Irvingism (English) comes from English -ism, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

Irvingism (English): The doctrines and practices of the Catholic Apostolic Church

Definitions

The doctrines and practices of the Catholic Apostolic Church

Ancestry of “Irvingism”, step by step

Step	Language	Word	Meaning
1	English	-ism	Used to form nouns of action or process or result...
2	Latin	-ismus	-ism
3	Ancient Greek	-ισμός	Forms abstract nouns
4	Ancient Greek	-μός	Forms abstract nouns
5	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

Every word from Proto-Indo-European -mós →Every word from English -ism →Every word from Ancient Greek -μός →