pölykuoren
Pölykuoren is the genitive form of pölykuori, a Finnish compound noun meaning "dust shell" (from pöly 'dust' and kuori 'shell' or 'coat'). The base noun has several context-dependent senses in Finnish.
In everyday language, pölykuori commonly refers to a thin layer of dust that accumulates on surfaces, furniture,
In publishing contexts, pölykuori is used to describe the protective paper cover placed around a book, known
In scientific usage, the term is employed to describe an outer layer around a particle or body.
The word illustrates how a simple compound of native Finnish roots can acquire specialized senses across domains.