folium

== English == === Etymology === From Latin folium (“leaf”). Doublet of foil and folio, distantly also with phyllo and phyllon. === Pronunciation === === Noun === folium (countable and uncountable, plural foliums or folia) (rare) A leaf. A leaf (2 pages) of a codex or manuscript. A document that acts as the legal record of a transaction. (especially real estate) A certificate of title. A thin sheet or plate of a foliated rock or mineral. (anatomy) A lobe on a branching structure. A leaf-like protrusion or lobule on one of the vermes of the cerebellum. (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. (uncountable) Synonym of turnsole (“purple dye”). (zoology) A symmetric pattern on the abdomen of some spiders. ==== Derived terms ==== == Latin == === Etymology === Traditionally derived from Proto-Indo-European *bʰolh₃yom (“leaf”), from *bʰleh₃- (“blossom, flower”), and thus an exact cognate of Ancient Greek φῠ́λλον (phŭ́llon). An alternative theory, favored by Driessen and De Vaan, derives the word from Proto-Indo-European *dʰolyom, from *dʰelh₁- (“be green”), whence Middle Irish duille, Welsh dail, Ancient Greek θάλλω (thállō, “to bloom”), Old Armenian դալար (dalar, “green, fresh”), Albanian dal (“to exit, go out”). === Pronunciation === (Classical Latin) IPA(key): [ˈfɔ.li.ũː] (modern Italianate Ecclesiastical) IPA(key): [ˈfɔː.li.um] === Noun === folium n (genitive foliī or folī); second declension a leaf (including a conifer's needle) a petal (Late Latin) a sheet or leaf of paper (figuratively) trifle, thing of no consequence ==== Declension ==== Second-declension noun (neuter). 1Found in older Latin (until the Augustan Age). ==== Derived terms ==== ==== Related terms ==== ==== Descendants ==== (See folia for further descendants.) === References === === Further reading === “fŏlĭum”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press “folium”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers "folium", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887) “fŏlĭum”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette, page 678/1. “folium” on page 719/3 of the Oxford Latin Dictionary (1st ed., 1968–82) Niermeyer, Jan Frederik (1976), “folium”, in Mediae Latinitatis Lexicon Minus, Leiden, Boston: E. J. Brill, page 439/2 == Romanian == === Etymology === Borrowed from Latin folium. === Noun === folium n (plural foliumuri) (geometry) folium ==== Declension ==== === References === folium in Academia Română, Micul dicționar academic, ediția a II-a, Bucharest: Univers Enciclopedic, 2010. →ISBN