Reaktorin

Reaktorin is the genitive singular form of the Finnish noun reaktori, meaning a reactor. In Finnish, genitive forms are used to indicate possession, association, or characteristic relative to the noun they modify. Reaktorin signals that something belongs to or concerns a reactor.

In terms of grammar, reaktori is a regular noun, and its genitive singular is reaktorin. For plural references, the genitive plural is typically formed with -ien, as in reaktorien, which means “of reactors” or “the reactors’.” These forms are used across technical, scientific, and everyday contexts when specifying ownership or relation to a reactor.

Common uses include describing attributes or components related to a reactor, such as reaktorinsäätimet (reactor controls), reaktorin turvallisuusjärjestelmät (the reactor’s safety systems), or reaktorin kapasiteetti (the reactor’s capacity). The possessive function of the form makes it a frequent choice in technical writing, reporting, and discussion about nuclear or chemical processing facilities, as well as metaphorical or extended uses in broader discourse.

Etymology-wise, reaktori is a loanword adopted into Finnish to denote a device that sustains a reaction, and reaktorin follows the standard Finnish genitive formation pattern. The term is used in formal and semi-formal Finnish, with clear, neutral connotations appropriate for engineering, physics, and policy contexts.

See also: reaktori, Finnish grammar, possessive forms in Finnish.