sosiaalisen
Sosiaalisen is the genitive singular form of the Finnish adjective sosiaalinen, meaning “social.” In Finnish grammar, adjectives agree with the nouns they modify in number and case, so sosiaalisen appears before a noun that is in the genitive case to express possession or a relation to social aspects. The form is common in formal, technical, and media language.
Typical usage examples include phrases such as sosiaalisen median algoritmit (the algorithms of social media), sosiaalisen
The word is built from the root sosiaali plus the adjectival ending -nen, a productive formation in