Originally probably a pun. Literally outo (“strange”) + kumpu (“hill”). As proper noun Outokumpu is also a stainless steel and mining company and a former copper-mining town.
outokumpu (rare)
| Inflection of outokumpu (Kotus type 1*H/valo, mp-mm gradation) | |||
|---|---|---|---|
| nominative | outokumpu | outokummut | |
| genitive | outokummun | outokumpujen | |
| partitive | outokumpua | outokumpuja | |
| illative | outokumpuun | outokumpuihin | |
| singular | plural | ||
| nominative | outokumpu | outokummut | |
| accusative | nom. | outokumpu | outokummut |
| gen. | outokummun | ||
| genitive | outokummun | outokumpujen | |
| partitive | outokumpua | outokumpuja | |
| inessive | outokummussa | outokummuissa | |
| elative | outokummusta | outokummuista | |
| illative | outokumpuun | outokumpuihin | |
| adessive | outokummulla | outokummuilla | |
| ablative | outokummulta | outokummuilta | |
| allative | outokummulle | outokummuille | |
| essive | outokumpuna | outokumpuina | |
| translative | outokummuksi | outokummuiksi | |
| abessive | outokummutta | outokummuitta | |
| instructive | — | outokummuin | |
| comitative | See the possessive forms below. | ||