folium

1. (rare) A leaf.Examples: "278.0 common walnut-tree folium"; "In conclusion, under the recommended use conditions Uva-ursi folium is a safe therapeutic option for treating lower urinary tract infections."; "The fire is stoked by blowing through a hollow cane made from the folium of the tucum palm."countablerareuncountable

2. A document that acts as the legal record of a transaction.Examples: "There may nevertheless be a separate certificate and folium for any derived estate deed."; "When this occurs, the existing declaration of title or conveyance is cancelled, the existing folium of the record closed, a fresh declaration of title issued to the new proprietor, and a new folium opened in the record book, upon which are carried forward the memorials of all lesser estates, interests, and charges affecting the land, and continuing current at the time of recording the change of ownership of the freehold."; "The duplicate certificates are bound into a register and each forms a distinct folium of the register of one or more pages, for recording all dealings affecting the land, whether fee simple, lesser estate, mortgage, charge or interest, whether subsisting at the time the certificate is issued or subsequently created."countableespeciallyuncountable

3. (anatomy) A lobe on a branching structure.Examples: "The folia of these project considerably beyond the level of the soft cœnenchyma, and produce a very rugose appearance."; "The folium represents the second largest gross morphologic unit of the human kidney in those protolobes that are undivided and the third largest unit in subdivided protolobes in which the lobes are present."; "The folia are short, free or fused at the tips to form a ring of imperforate umbilical piles."countableuncountable

4. (anatomy) A lobe on a branching structure.Examples: "The vermis portion of lobule C₃ remains small, and still consists of only one folium."; "These diverge so sharptly from each other that they almost form a right angle with the parent stem, and they run parallel to the long axis of the folium, threading their way between the branches of the various dendritic planes of the cells of Purkinje and entering into contact association with them."; "The cells are flattened in a direction transverse to the long axis of the folium, and thus appear broad in sections carried across the folium, and fusiform in sections parallel to the long axis of the folium."countableuncountable

5. (geometry) 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.Examples: "These circular cubics are Newton's defective hyperbolae, with a diameter, species 39, 41, 45; the ampullate cubic represents the folium of the unipartite quartic, and the ampaniform the bipartite quartic."; "I have argued that the real threat the Unruh effect poses to fundamental partical interpretation lies in its suggestion that physically reasonable states outrun the folium of any single irreducible Fock space representation."countableuncountable

6. (uncountable) Synonym of turnsole (“purple dye”).Examples: "Folium is thus described . "Folium is used for dying cloths and is a red colour, and another kind is purple, and another is blue."; "The "folium" of the Greek illuminators was procured from plants growing abudantly near Athens, while that of the Hiberno-Saxon Scribes was obtained from the "norma" or "gorma" of the Celts."; "There is a strong probability that the violets of the san Paolo Bible were roduced by a mixture of folium and album."Synonyms: turnsoleuncountable