Where does “välipohja” come from?

välipohja (Finnish) comes from Finnish pohja, from Proto-Finnic pohja, from Proto-Finno-Permic pošja.

välipohja (Finnish): intermediate floor (structure); the structure between two levels in a building, extending from the ceiling of the room below to the floor of the room above

Definitions

intermediate floor (structure); the structure between two levels in a building, extending from the ceiling of the room below to the floor of the room above

Ancestry of “välipohja”, step by step

Step	Language	Word	Meaning
1	Finnish	pohja	bottom; bed; fundament
2	Proto-Finnic	pohja	bottom; base, foundation; north
3	Proto-Finno-Permic	pošja	—

Every word from Proto-Finno-Permic pošja →Every word from Proto-Finnic pohja →Every word from Finnish pohja →