keskiaikaisista

Keskiaikaisista is the elative plural form of the Finnish adjective keskiaikainen, meaning medieval. It is used before a plural noun to indicate from or relating to the medieval period in the elative case. The form appears in phrases such as keskiaikaisista lähteistä (from medieval sources) and keskiaikaisista rakennuksista (from medieval buildings).

In practice, keskiaikaisista functions as a grammatical marker that helps specify the origin or character of the nouns it modifies. For example: Tutkimus pohjautuu keskiaikaisista lähteistä peräisin olevaan tekstiin, meaning a text derived from medieval sources. The form is common in Finnish historical writing, archaeology and philology, where researchers discuss artifacts, architecture, manuscripts and traditions tied to the Middle Ages.

The term itself refers to the broader historical period known as the Middle Ages. In European historiography, the era spans roughly from the 5th to the 15th centuries, though the exact dating varies by region. In Finnish scholarship, references to keskiaikainen maailmankuva, keskiaikaiset kaupungit or keskiaikaiset käsikirjoitukset denote objects, ideas or practices associated with that era.

Overall, keskiaikaisista is a regular inflected form used to describe plural nouns in the elative case, enabling precise discussion of medieval origins or characteristics in Finnish prose.