zasypowy

Zasypowy is a Polish adjective derived from the verb zasypać, meaning to bury by piling or to backfill. It denotes a relationship to filling or backfilling and is used mainly in technical and professional language such as civil engineering, geology, mining, and construction.

In usage, zasypowy describes materials, layers, or operations involved in filling a space or void. A material zasypowy is the material used to backfill trenches, excavations, or cavities, typically consisting of soil, sand, gravel, or other fill aggregates. A warstwa zasypowa refers to the backfill layer formed by this material. The term can also describe processes or tasks, for example zasypowe prace, meaning backfill works.

In mining and excavation, zasypowy backfill refers to the material used to fill mined-out voids to provide support and stability. In geology or sedimentology, it may be used to characterize infill deposits that fill cavities or depressions after erosion or subsidence, though more specific terms are often preferred in scientific contexts.

The word contrasts with podsypka, a related concept describing a finer or preparatory fill layer, and with zasypanie, the act of filling or burying itself. In English, zasypowy is typically translated as backfill (as an adjective: backfill material) or infill.

Etymology and usage vary regionally; the term is comparatively common in technical Polish but rare in everyday speech.