1. plural of folium; leaves or leaf-like structures
Usage: botanical; technical
2. thin layers or sheets, especially in geological or anatomical contexts
Usage: technical; scientific

Examples

• The botanist examined the folia under a microscope.
• The rock showed distinct folia formed by metamorphic processes.
• Ancient folia preserved in sedimentary layers revealed past climates.
• The anatomist studied the cerebellar folia in detail.
• Pressed folia from the herbarium collection were carefully catalogued.
• The geological survey mapped the folia orientation in the outcrop.