Rekisteröidyllä

Rekisteröidyllä is a Finnish term formed as the adessive singular form of the adjective rekisteröity, meaning "registered." In Finnish, adjectives agree with the noun they modify in case and number, so rekisteröidyllä is used when the noun it describes is in the adessive case. The construction is common in administrative, legal, and public‑sector language to indicate that a person or entity is entered in a register or system.

The underlying concept behind rekisteröity is registration or entry into a register. This can refer to various registers, such as a population register, a patient registry, a business or corporate register, or membership lists. The term often appears in contexts where distinguishing between registered and non‑registered subjects is important for rights, obligations, or access to services.

Usage notes: Rekisteröidyllä does not stand alone as a noun; it functions as an adjective in the adessive case and accompanies a noun in the same case. It contrasts with rekisteröity (nominative form) or rekisteröityä (partitive form). In formal Finnish, the form helps specify the status of a subject in relation to a register: for example, "Rekisteröidyllä henkilöllä on oikeus saada tieto" translates to "The registered person has the right to obtain information."

See also: rekisteröinti, rekisteröityminen, rekisteröinti-ilmoitus.