Oulu - Name

Name

The city is named after the river Oulujoki, which originates in the lake Oulujärvi. There have been a number of theories for the origin of the name Oulu. At minimum, the structure of the word requires that if originally given by speakers of a Uralic language, the name must be a derivative. In all likelihood it also predates Finnish settlement and is thus a loanword from one of the now-extinct Saami languages once spoken in the area.

The most probable theory is that the name derives from the Finnish dialectal word oulu, meaning "floodwater", which is related to e.g. Southern Saami åulo, meaning "melted snow", åulot meaning "thaw" (of unknown ultimate origin). Two other word families have also been speculated to be related. The first is seen in the Northern Savo dialectal word uula and its Saami counterpart oalli, both meaning "river channel". The second is the Uralic root reconstructed as *uwa, meaning "river bed" (reflected as vuo in modern Finnish, also in derivatives such as vuolas "heavy-flowing"). To either of these roots, some Saami variety would have to be assumed having added further derivational suffixes.