18vuotiaita
18vuotiaita is a Finnish noun phrase meaning “eighteen-year-olds.” In standard Finnish, the form is written as 18-vuotiaita. It is formed from the numeral 18 and the noun vuotias (an eighteen-year-old) with the partitive plural ending -ia, used when referring to an indefinite or non-count group.
Linguistic notes: The nominative plural form is 18-vuotiaat; the genitive is 18-vuotiaiden. The hyphenated spelling 18-vuotiaita
Usage: The term is used in demographic and sociological contexts to describe groups of people aged 18,
Legal and social context: In Finland, the age of majority is 18, granting eligibility for many civil