folium

noun10

1. •
   (rare) A leaf.

   • In conclusion, under the recommended use conditions Uva-ursi folium is a safe therapeutic option for treating lower urinary tract infections. — 2013
2. •
   A leaf (2 pages) of a codex or manuscript.

   • But Barwick and Robinson both investigated V, and inform us that V leaves almost a full folium vacant (only the first two lines of folium 227 being occupied by the text before the lacuna). — 1979
3. •
   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.
4. •
   A document that acts as the legal record of a transaction.
5. •
   A certificate of title.

   • There may nevertheless be a separate certificate and folium for any derived estate deed. — 1872
6. •
   A lobe on a branching structure.

   • The folia of these project considerably beyond the level of the soft coenenchyma, and produce a very rugose appearance. — 1906
7. •
   A leaf-like protrusion or lobule on one of the vermes of the cerebellum.

   • The vermis portion of lobule C₃ remains small, and still consists of only one folium. — 1904
8. •
   A symmetric pattern on the abdomen of some spiders.

   • The folium of silvatica has a row of oblique black markings along the edge on each side, while in angulata it is evenly notched. — 1885
9. •
   A thin sheet or plate of a foliated rock or mineral.

   • The folia of quartz are longer, thinner, and more uniform in thickness. — 1887
10. •
    Synonym of turnsole (“purple dye”).

    • Folium is thus described . "Folium is used for dying cloths and is a red colour, and another kind is purple, and another is blue. — 1847