rekisteröitymiseensä

rekisteröitymiseensä is a Finnish word that translates to "to their registration" or "for their registration." It is the third-person possessive form of the noun "rekisteröityminen," which means "registration." This grammatical form is used when referring to the act of registering that belongs to or pertains to a group of people or a single entity in the third person (e.g., "he," "she," "it," "they").

For example, in a sentence like "He discussed the details of their registration," the Finnish equivalent might use the word rekisteröitymiseensä to refer to "their registration." This word encapsulates the concept of registration belonging to the subject of the sentence. The suffix "-nsä" indicates the third-person possessive, signifying ownership or relation.

The word is a compound of "rekisteröityä" (to register) and the nominalizing suffix "-minen," which creates a noun from a verb. The possessive suffix is then added. Understanding this structure helps in deciphering its meaning and usage in various Finnish contexts. It is a common grammatical feature in Finnish, allowing for precise expression of possession and relation.