Where does “kulmaprisma” come from?

kulmaprisma (Finnish) comes from Finnish prisma, from Late Latin prisma, from Ancient Greek πρίσμα, from Ancient Greek -μᾰ, from Proto-Indo-European -mn̥ — Creates action nouns or result nouns from verbs.

kulmaprisma (Finnish): zenith prism

Definitions

zenith prism

Ancestry of “kulmaprisma”, step by step

kulmaprisma traces back through two separate lines of ancestry.

via Finnish prisma

Step	Language	Word	Meaning
1	Finnish	prisma	prism
2	Late Latin	prisma	prism
3	Ancient Greek	πρίσμα	Anything sawn, sawdust; A prism
4	Ancient Greek	-μᾰ	"suffix forming a noun denoting the result of an...
5	Proto-Indo-European	-mn̥	Creates action nouns or result nouns from verbs

via Finnish kuľma

Step	Language	Word	Meaning
1	Finnish	kuľma	corner external point where two converging lines meet

Every word from Proto-Indo-European -mn̥ →Every word from Ancient Greek -μᾰ →Every word from Ancient Greek πρίσμα →