According to one theory, from Old Estonian *Põltoisa(n), compare Finnish peltoisa. Alternatively from põld (“field”) + ots (“end”) (Põlluotsa -> *Põltsa-), suffixed with maa (“land”). Alternatively, from *põldus, an unattested derivation from põld, which seems unlikely.
Põltsamaa
| Declension of Põltsamaa (ÕS type 26i/idee, no gradation) | |||
|---|---|---|---|
| singular | plural | ||
| nominative | Põltsamaa | — | |
| accusative | nom. | ||
| gen. | Põltsamaa | ||
| genitive | — | ||
| partitive | Põltsamaad | — | |
| illative | Põltsamaasse | — | |
| inessive | Põltsamaas | — | |
| elative | Põltsamaast | — | |
| allative | Põltsamaale | — | |
| adessive | Põltsamaal | — | |
| ablative | Põltsamaalt | — | |
| translative | Põltsamaaks | — | |
| terminative | Põltsamaani | — | |
| essive | Põltsamaana | — | |
| abessive | Põltsamaata | — | |
| comitative | Põltsamaaga | — | |