Läpäisevyydellisiin

Läpäisevyydellisiin is a Finnish inflected form derived from läpäisevyys, meaning permeability. It is used as a modifier to indicate membership in categories defined by permeability-related criteria, typically in technical or academic writing. The form is relatively rare and most often appears in discussions that classify components, factors, or phenomena according to their permeability properties.

Morphology and usage notes: The word combines the noun läpäisevyys with an adjectival inflection that yields a form meaning “permeability-related,” and it ends with the plural illative suffix -isiin, marking “into/to permeability-related groups.” In practice, läpäisevyydellisiin is used in phrases that describe groups or sets of items to which permeability-related characteristics apply. For example, the phrase läpäisevyydellisiin ryhmiin kuuluvat tekijät translates to “the factors belonging to permeability-related groups.” The construction is specialized and most common in technical catalogs, standards, or research reports.

Context and status: Because it conveys a precise, domain-specific relation, läpäisevyydellisiin is considered jargon within Finnish technical and scholarly contexts. It is not part of everyday language and may appear primarily in Nordic-language papers, glossaries, or linguistic discussions of Finnish morphology.

See also: läpäisevyys, läpäisevä, -llinen suffix, illative/plural inflection in Finnish.