Onteloisia

Onteloisia is a Finnish adjective form meaning hollow or containing a cavity. It is the plural partitive form of the adjective onteloisa, used to describe nouns that have hollows or interior spaces. The base noun ontelo means cavity or hollow.

In Finnish grammar, adjectives agree with the nouns they modify in number and case. The form onteloisia appears with plural nouns in the partitive case, often in contexts where the amount is indefinite or when the statement is ongoing or partial. This makes onteloisia a common element in descriptive writing, including technical and scientific prose, where the hollow nature of objects or structures is being noted.

Common usage involves phrases describing physical properties of objects, containers, or structural features. For example, it can appear in combinations such as onteloisia kappaleita or onteloisia rakenteita, referring to hollow pieces or hollow structures. The term itself is not a specialized technical term with a fixed definition, but rather a standard inflected form that conveys the hollow interior characteristic.

Linguistic note: onteloisoa describes the property, while onteloisia is the grammatical form used when the referenced items are plural and in the partitive case. Its meaning is determined by the noun it modifies, and it can be applied across a range of contexts from everyday objects to more formal scientific descriptions.

See also: ontelo (cavity or hollow) and related morphological forms of Finnish adjectives.