nimisanayksikkö

Nimisanayksikkö is a term used in Finnish linguistics to denote the smallest unit that functions as a proper name within a larger nominal system. The concept lies at the intersection of onomastics and morphology and is used to analyze how names are formed, stored, and processed in language.

The word combines nimi (name) with sanayksikkö (word unit), reflecting its role as a distinct unit within the nominal structure. In practice, a nimisanayksikkö can be a single morpheme or a multi-morpheme compound that carries the referential identity of a person, place, organization, or other named entity. In Finnish, proper names interact with case, number, and other grammatical features, so nimisanayksikkö units may participate in inflection as part of larger name forms.

Applications include lexicography, where entries organize information around name-based units; natural language processing, where named-entity recognition targets nimisanayksikkö; and historical linguistics, which studies changes in naming over time.

The term is a descriptive analytic label rather than a universal category, used to discuss naming systems and nominal structures within Finnish and cross-linguistic studies. See also onomastics, proper noun, named entity, morphology.