laajentuneisiin

Laajentuneisiin is a Finnish grammatical form derived from the verb laajentua, meaning to expand. It represents the illative plural form of the past participle laajentunut (expanded) and functions as an adjective modifying a plural noun in illative case. In usage, laajentuneisiin conveys the sense of “to/into the expanded ones,” referring to items or concepts that have undergone expansion.

Morphology and usage

In Finnish, participles can be used as adjectives, and their endings reflect the case and number of the noun they modify. The illative plural ending -isiin attaches to the participle stem laajentune-, producing laajentuneisiin. This form is typical in formal or technical contexts when describing multiple entities that have been expanded, such as spaces, criteria, regions, or processes. The phrase aligns with the illative case, which marks direction toward or into something.

Common contexts

- Laajentuneisiin tiloihin: into the expanded spaces.

- Laajentuneisiin kriteereihin: into the expanded criteria.

- Laajentuneisiin alueisiin: into the expanded regions.

Examples

- Tutkimus keskittyy laajentuneisiin tiloihin ja uuden laboratorioalueen rakentamiseen.

- Päätökset on tehty laajentuneisiin kriteereihin perustuen.

Etymology and relation to other forms

Laajentuneisiin comes from laajentua (to expand) + the past participle laajentunut, with the illative plural suffix -isiin. Other related forms include laajentuneita (partitive plural) or laajentuneita tiloja, which lie outside the illative usage. The form exemplifies Finnish word formation where participles function as descriptive adjectives and take case endings to indicate syntactic roles.

See also

Finnish grammar, participles, illative case.

References

General references on Finnish participles and case endings provide the framework for and examples of illative plural forms like laajentuneisiin.