tyyppiin

Tyyppiin is the illative singular form of the Finnish noun tyyppi, meaning type or kind. In Finnish grammar, the illative case expresses direction toward or into a destination, including abstract destinations such as a category or group. Therefore, typpiin is used when describing movement into or reference to a particular type or class, especially in discussions of classification, categorization, or membership within a type.

In practice, typpiin appears in phrases that relate descriptions or processes to a specific type. For example, the phrase tyypiin kuuluvat ominaisuudet means “the features that belong to the type.” Such usage is common in linguistics, data modeling, software typing, and other fields where items are organized by type or category. The illative form helps indicate that the discussion concerns elements that enter or pertain to a given type.

Etymology and related forms: The base noun tyyppi comes from international terms for “type,” with Finnish adapting it into a native noun. The illative suffix -iin combines with the stem to produce typpiin, one of several inflected forms used to express different grammatical roles. Related forms include tyypin (genitive), tyypiksi (partitive or translationally to a type, depending on context), and other case forms used to discuss types in Finnish.

See also: tyyppi, illatiivi and other Finnish case forms, classification and categorization terminology.