Where does “suojaviiva” come from?

suojaviiva (Finnish) comes from Finnish suoja, from Proto-Finnic sooja, from Russian со́я, from Dutch soja, from Japanese そい, from Japanese 醤油, from Middle Chinese 醬油, from Middle Chinese 醬 — bean paste.

suojaviiva (Finnish): "the line"; an imaginary line used to apply the 180 degree rule

Definitions

"the line"; an imaginary line used to apply the 180 degree rule

Ancestry of “suojaviiva”, step by step

suojaviiva traces back through two separate lines of ancestry.

via Finnish suoja

Step	Language	Word	Meaning
1	Finnish	suoja	shelter; protective covering; refuge
2	Proto-Finnic	sooja	shelter; protection; warm
3	Russian	со́я	jay {{i\|dialectal}}
4	Dutch	soja	soy
5	Japanese	そい	醤油 soy sauce
6	Japanese	醤油	soy sauce
7	Middle Chinese	醬油	—
8	Middle Chinese	醬	bean paste

via Finnish viiva

Step	Language	Word	Meaning
1	Finnish	viiva	line; dash, hyphen; bar
2	Finnish	vije-	—

Every word from Middle Chinese 醬 →