The plural of folium; leaves collectively or in botanical contexts, or in anatomy, the leaf-like ridges on the surface of the cerebellum.
From Latin 'folia,' plural of 'folium' meaning leaf. The word traveled through scientific terminology to describe both plant structures and brain anatomy.
Your cerebellum (the part of your brain that handles balance and coordination) literally has 'leaves' inside your skull—scientists named them folia because they look like tiny leaves folded together!
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