Välistö

Välistä is a Finnish word that functions as the elative singular form of the noun väli, which means gap, interval, or space between things. In Finnish grammar, the elative case typically marks origin, source, or movement from inside a space, so välistä is the form used when something is described as coming from or being derived from a space defined by a boundary or range.

The base word väli can refer to physical space (a gap between objects), a temporal interval (a span of time), or a figurative space (the range between limits). Välistä is most commonly encountered in expressions that indicate a range or inclusion within bounds. A typical usage is kolmen ja viiden välistä, meaning “between three and five.” In such uses, välistä conveys inclusion within the interval rather than a fixed endpoint.

In other contexts, välistä appears in phrases describing selection or extraction from a set, for instance from among several options: kaikkien välistä, “from among all.” Grammatically, välistä is a case form rather than a standalone adverb, and it may be modified by possessives or genitives (kaikkien välistä, kyseisen välistä).

Relation to related forms:

- Väli in its other cases (such as välin in genitive or väliä in partitive) serves other grammatical roles.

- The elative form välistä is one of several Finnish case endings used to express various notions of origin, source, or movement from within a space described by väli.

In summary, välistä is the elative form of väli used to express “from the space between” and, in practice, to denote ranges or origins within a defined interval in Finnish.