Where does “infrasauna” come from?

infrasauna (Finnish) comes from Finnish sauna, from Proto-Finnic sakna, from Proto-Germanic stakna-.

infrasauna (Finnish): infrared sauna

Definitions

  1. infrared sauna

Ancestry of “infrasauna”, step by step

infrasauna traces back through two separate lines of ancestry.

via Finnish sauna

StepLanguageWordMeaning
1Finnishsaunasauna; Any bath where sweating is part of the...
2Proto-Finnicsaknasauna
3Proto-Germanicstakna-—

via Finnish infra

StepLanguageWordMeaning
1Finnishinfrainfra infrastructure
2Finnishinfrastruktuuriinfrastructure
Every word from Proto-Germanic stakna- →Every word from Proto-Finnic sakna →Every word from Finnish sauna →