microscopic pores
Invisible skin holes
Microscopic pores are openings too small to see with the naked eye.
The term appears in descriptions of skin, membranes, fabrics, and materials like concrete or ceramics: Sweat escapes through microscopic pores in the skin.
The phrase emphasizes that these passages exist even when invisible, often explaining how substances pass through seemingly solid surfaces.
- membranesThin flexible tissue layers
- skinBody's outer layer
- cellsBasic biological units
- cell membraneOuter layer of cytoplasm
- tinyExtremely small in size
openings · permeable · filtration · coffee filter · tea bag · osmosis · capillaries · breathable · sweat · sweat glands · absorption · sponge · fine mesh · tissue · nanoscale · invisible · surface · diffusion
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