1. not having pores or small openings; not allowing liquids or gases to pass through

Examples

• The nonporous surface of the granite countertop resists stains.
• Plastic containers are nonporous and easy to clean.
• The scientist used a nonporous membrane to separate the solutions.
• Nonporous materials like glass don’t absorb odors.
• The nonporous coating prevents water from seeping through the wall.
• Metal surfaces are typically nonporous and waterproof.