Pitkäketjuisiksi

Pitkäketjuisiksi is a Finnish grammatical form used to describe something that has become or is characterized by long-chain structure. It is the translative plural form of the adjective stem referring to long-chain (pitkäketjuinen/pitkäketjuisen), and it appears in contexts where a change of state or form is being described.

In scientific Finnish, pitkäketjuisiksi is most often encountered in chemistry, polymer science, and biochemistry. It expresses that molecules or materials have elongated into long-chain forms. The form answers questions such as “What did they become?” or “Into what state did they transform?” and is typically used with plural subjects or with plural noun phrases. The corresponding singular form is pitkäketjuiseksi.

Common usage examples include descriptions of processes that lengthen molecular chains, such as polymerization or chain-extension reactions. For instance, one might say that certain monomers “muuttuvat pitkäketjuisiksi polymeereiksi” (change into long-chain polymers), or that a mixture contains components that have become “pitkäketjuisiksi yhdisteiksi.”

Notes on nuance: pitkäketjuisiksi conveys a qualitative change toward a long-chain architecture rather than merely describing a static property. It is more a specialized term than everyday Finnish and is primarily found in technical or academic texts dealing with molecular structure and materials science.

See also: long-chain molecules, polymerization, Finnish scientific vocabulary.