Kolmikulmaisella

Kolmikulmaisella is a Finnish inflected form used to describe something with three angles or corners. It is the adessive singular form of the adjective kolmikulmainen, meaning "three-cornered" or "triangular." The word is formed from kolmi- (three) and kulma (angle), with the suffix -mainen making it an adjective, and then the adessive ending -lla to indicate location or relation, yielding kolmikulmaisella. In standard Finnish, adjectives decline for case and number, so kolmikulmainen becomes kolmikulmaisella in the adessive singular.

The term is not common in everyday language and is more likely to appear in descriptive or technical prose—geometry, cartography, architecture, or creative writing that seeks precise geometric imagery. It is often used with nouns in the adessive to indicate location or context, for example on kolmikulmaisella alueella (“on a three-cornered area”). In ordinary texts, speakers may instead use simpler expressions or the noun phrase describing the shape.

Because kolmikulmainen is a compound adjective, its usage can feel formal or technical, and may be replaced by more general descriptors or direct description depending on the context. The form kolmikulmaisella thus serves as a precise descriptive option when a three-cornered condition is central to the statement.