Where does “watt-oră” come from?

watt-oră (Romanian) comes from Romanian oră, from Latin hōra, from Ancient Greek ὥρα, from Proto-Hellenic *worā, from Proto-Indo-European wēr-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.

watt-oră (Romanian): watt-hour

Definitions

watt-hour

Ancestry of “watt-oră”, step by step

watt-oră traces back through two separate lines of ancestry.

via Romanian oră

Step	Language	Word	Meaning
1	Romanian	oră	hour
2	Latin	hōra	hour
3	Ancient Greek	ὥρα	any defined period of time; season; climate
4	Proto-Hellenic	*worā	—
5	Proto-Indo-European	wēr-	true
6	Proto-Indo-European	wer-	to burn; to cover, heed, notice; squirrel

via Romanian watt

Step	Language	Word	Meaning
1	Romanian	watt	watt
2	French	watt	watt
3	English	Watt	Watt, a king of Sussex

Every word from Proto-Indo-European wer- →Every word from Proto-Indo-European wēr- →Every word from Proto-Hellenic *worā →