Elastisissa

Elastisissa is the plural inessive form of the Finnish adjective elastinen, meaning elastic. In Finnish grammar, adjectives agree with the noun in number and case, and their forms include elastisessa for singular inessive and elastisissa for plural inessive. The word is commonly encountered when describing multiple nouns that are in an elastic or elastic-condition state.

Usage and scope: Elastisissa is used when referring to more than one noun in the inessive case, for example elastisissa materiaaleissa (in elastic materials) or elastisissa olosuhteissa (in elastic conditions). It appears across disciplines such as physics, materials science, and engineering, as well as in everyday language, to describe plural nouns in the sense of elasticity or deformability under certain conditions. The form contrasts with elastisessa (singular inessive) and with the corresponding suffixes in other cases.

Example phrases:

- Elastisissa materiaaleissa muodon palautuminen on nopeaa. Translation: In elastic materials, the return to shape is fast.

- Elastisissa olosuhteissa jännitys käyttäytyy eri tavoin kuin elastisissa olosuhteissa. Translation: In elastic conditions, stress behaves differently than in inelastic conditions.

These examples illustrate how elastisissa links an adjective to a plural noun in the inessive, indicating location or state.

See also: elastinen, elastisuus, elasticity, and related Finnish grammatical forms such as elastisessa and inelastisissa (the latter for inelastic contexts).