noun. A thin, leaflike layer or stratum occurring especially in metamorphic rock.

noun. A plane cubic curve having a single loop, a node, and two ends asymptotic to the same line.

noun. A leaf; a lamina; a lamella; a layer.

noun. In geometry, a loop, being a part of a curve terminated at both ends by the same node.

noun. A leaf, esp. a thin leaf or plate.

noun. A curve of the third order, consisting of two infinite branches, which have a common asymptote. The curve has a double point, and a leaf-shaped loop; whence the name. Its equation is x3 + y3 = axy.

noun. A leaf, especially a thin leaf or plate.

noun. A curve of the third order, consisting of two infinite branches having a common asymptote. The curve has a double point, and a leaf-shaped loop.

noun. a thin layer or stratum of (especially metamorphic) rock

"You have got a distinct notion, I hope, of leaf-crystals; and you see the sort of look they have: you can easily remember that 'folium' is Latin for a leaf, and that the separate flakes of mica, or any other such stones, are called"

folium cacuminis  folium of descartes  

formation  geological formation  

folia