Kerroksessa

Kerroksessa is a Finnish locative form of kerros, meaning a floor or a layer. The term is used to express that something is located inside a particular floor of a building or within a specific layer in a material, stratigraphic sequence, or organizational structure. In everyday language it most commonly indicates the floor level of a building, for example when describing where something is situated or where someone lives.

Grammatical notes: kerroksessa is the inessive singular form of kerros. The inessive suffix -ssa/-ssä is attached to the noun to indicate “in.” Because kerros ends with -os, the correct form is kerroksessa. The corresponding plural form is kerroksissa, used when referring to multiple floors or layers.

Examples: Asun kolmannessa kerroksessa. (I live on the third floor.) Talo on kolmannessa kerroksessa. (The building is on the third floor.) Geologiassa kerroksessa viitataan maan tai sedimenttikerroksen sisällä olevaan kerrokseen, eli tiettyyn kerrokseen stratigrafiassa.

Etymology and usage notes: kerroksessa is formed from kerros, a native Finnish noun meaning floor or layer, with the standard inessive suffix -ssa. The word is used in both architectural and geological contexts to denote location within a layer or level. In plural contexts, kerroksissa refers to being in multiple floors or layers.