aineksissa

Aineksissa is a Finnish word form, the inessive plural of ainekset, meaning literally "in the ingredients" or "among the ingredients." It is formed from the noun ainekset (ingredients, materials, components) with the locative ending -issa, indicating location or containment.

Pronunciation is approximately "AI-nek-sis-sa" in English rendering. In use, aineksissa typically appears in literal contexts referring to the contents of a mixture or recipe, for example: "Taikinan aineksissa on vehnäjauhoja" ("Among the dough's ingredients there is wheat flour"). The form can also occur in broader descriptive phrases where something is located within a set of components or elements.

The lexical root aines and its plural ainekset are also used idiomatically in Finnish to express potential or the "makings" of something (e.g., "kirjassa on aineksia hyvään draamaan" — "the book has the makings of a good drama"). Idiomatic expressions more often use the partitive plural aineksia, but the locative aineksissa may appear when the emphasis is on where those components are found.

Etymologically the word belongs to Finnic vocabulary related to words for substance or material found in other Finnic languages. Grammatically it illustrates Finnish case morphology by combining plural noun forms with locative case endings.