1. extremely small pores or openings, typically less than 2 nanometers in diameter
Usage: scientific; materials science

Examples

• The activated carbon contains numerous micropores that trap gas molecules.
• Micropores in the membrane allow only water molecules to pass through.
• Scientists studied the micropores in the rock sample using electron microscopy.
• The catalyst’s effectiveness depends on the size and distribution of its micropores.
• Micropores in soil affect water retention and nutrient availability.
• The filter material has micropores that remove bacteria from drinking water.