Where does “sipulikirkko” come from?

sipulikirkko (Finnish) comes from Finnish kirkko, from Old Saxon kirika, from Proto-West Germanic kirikā, from Ancient Greek κυριακόν, from Ancient Greek Κύριος, from Proto-Hellenic *kúrios — lord, master.

sipulikirkko (Finnish): an Eastern Orthodox church with an onion dome

Definitions

an Eastern Orthodox church with an onion dome

Ancestry of “sipulikirkko”, step by step

sipulikirkko traces back through two separate lines of ancestry.

via Finnish kirkko

Step	Language	Word	Meaning
1	Finnish	kirkko	church; cathedral
2	Old Saxon	kirika	church
3	Proto-West Germanic	kirikā	church
4	Ancient Greek	κυριακόν	church
5	Ancient Greek	Κύριος	Lord
6	Proto-Hellenic	*kúrios	lord, master

via Finnish sipuli

Step	Language	Word	Meaning
1	Finnish	sipuli	onion, "Allium cepa"; onion; onion, Allium
2	Old Swedish	sipul	red onion
3	Middle Low German	sipolle	—
4	Latin	cēpulla	onion-bed, onion-field
5	Latin	-ulus	Used to form a diminutive of a noun, indicating...

Every word from Proto-Hellenic *kúrios →Every word from Ancient Greek Κύριος →Every word from Ancient Greek κυριακόν →