Where does “potenssijoukko” come from?

potenssijoukko (Finnish) comes from Finnish potenssi, from Swedish potens, from Latin Potentia, from Latin potēns, from Latin posse, from Latin potis, from Proto-Italic potis, from Proto-Indo-European pótis — to drink.

potenssijoukko (Finnish): power set

Definitions

power set

Ancestry of “potenssijoukko”, step by step

potenssijoukko traces back through two separate lines of ancestry.

via Finnish potenssi

Step	Language	Word	Meaning
1	Finnish	potenssi	potency; power
2	Swedish	potens	potential, power
3	Latin	Potentia	situated in the valley of the Casuentus, now Potenza
4	Latin	potēns	being able (to), able; potent, mighty, strong, powerful
5	Latin	posse	present active infinitive of possum "to be able...
6	Latin	potis	able, capable, possible
7	Proto-Italic	potis	master, in control of
8	Proto-Indo-European	pótis	master, ruler; husband
9	Proto-Indo-European	ph₃tis	—
10	Proto-Indo-European	peh₃-	to drink

via Finnish joukko

Step	Language	Word	Meaning
1	Finnish	joukko	group, cluster, band; crowd of people number of things or persons, especially a rather large and unorganized one
2	Proto-Finnic	joukko	group
3	Proto-Germanic	jaukiją	draught animal; team of oxen
4	Proto-Indo-European	yewg-	to join, to yoke, to tie together

Every word from Proto-Indo-European peh₃- →Every word from Proto-Indo-European ph₃tis →Every word from Proto-Indo-European pótis →