Where does “opinkäsitys” come from?

opinkäsitys (Finnish) comes from Finnish käsitys, from Finnish käsittää, from Finnish käsi, from Finnish kahdeksan, from Proto-Finnic kakteksa, from Proto-Finnic kakci, from Proto-Uralic *kakta.

opinkäsitys (Finnish): doctrine body of teachings of an ideology, especially of a religion

Definitions

doctrine body of teachings of an ideology, especially of a religion

Ancestry of “opinkäsitys”, step by step

opinkäsitys traces back through two separate lines of ancestry.

via Finnish käsitys

Step	Language	Word	Meaning
1	Finnish	käsitys	conception; impression; opinion, view, viewpoint
2	Finnish	käsittää	to grasp, catch, reach; to understand,...
3	Finnish	käsi	hand; arm
4	Finnish	kahdeksan	eight
5	Proto-Finnic	kakteksa	eight
6	Proto-Finnic	kakci	two
7	Proto-Uralic	*kakta	—

via Finnish oppi

Step	Language	Word	Meaning
1	Finnish	oppi	doctrine; study, -logy, theory; in this sense...
2	Finnish	oppia	to learn
3	Proto-Finnic	oppidak	to learn
4	Proto-Finno-Ugric	woppe-	—

Every word from Proto-Uralic *kakta →Every word from Proto-Finnic kakci →Every word from Proto-Finnic kakteksa →