kiinteäisestä
The Finnish word "kiinteäisestä" is the elative plural form of the adjective "kiinteä." In English, "kiinteä" translates to "solid," "fixed," "firm," or "dense." The elative case in Finnish indicates movement from within something, or a state of being derived from a certain source. Therefore, "kiinteäisestä" would generally mean "from the solid ones," "from the fixed ones," or "from the firm ones," depending on the context.
For instance, if discussing geological processes, "kiinteäisestä" might refer to material originating from solid rock formations.