1. An area or region that is free from contamination, impurities, or unwanted elements; often used in scientific, industrial, or environmental contexts
The laboratory maintains a pure zone to prevent bacterial contamination.
O laboratório mantém uma zona pura para evitar contaminação bacteriana.
2. In metallurgy and materials science, a region of material with uniform composition and minimal defects
The pure zone of the metal sample showed excellent crystalline structure.
A zona pura da amostra de metal apresentou uma estrutura cristalina excelente.
3. An area designated for a specific purpose with strict standards of purity or cleanliness
Food production facilities require pure zones to meet health standards.
As instalações de produção de alimentos exigem zonas puras para atender aos padrões de saúde.