foliumn.

Brit.

/ˈfəʊlɪəm/, U.S.

/ˈfoʊliəm/

Etymology: < Latin folium leaf.

1. = folio n. 6.

ΘΚΠ

society > communication > book > kind of book > size of book > [noun] > folio volume > sheet of

folio1616

folium1886

1886 Statem. Land Laws Incorp. Law Soc. 26 Certificates..each constituting a distinct folium consisting of two or more pages.

2. Geometry.

Categories »

a. A finite loop of a nodal curve terminated at both ends by the same node.

b. Folium of Descartes, a plane nodal cubic curve with real nodal tangents, and one real inflection at infinity.

ΚΠ

1848 B. Price Diff. Calculus (1852) 319 To determine the nature of the point at the origin of the Folium of Descartes.

c. Used with prefixes uni-, bi-, etc. to indicate a curve with one, two, etc. indentations.

ΚΠ

1879 G. Salmon Treat. Higher Plane Curves (ed. 3) vi. 221 Zeuthen confines the name oval to a branch having no real bitangent or inflexions: one with a single real bitangent he calls a unifolium; one with 2, 3, or 4 such bitangents, a bifolium, trifolium or quadrifolium.

This entry has not yet been fully updated (first published 1897; most recently modified version published online March 2022).

单词	folium
释义	foliumn. Brit. /ˈfəʊlɪəm/, U.S. /ˈfoʊliəm/ Etymology: < Latin folium leaf. 1. = folio n. 6. ΘΚΠ society > communication > book > kind of book > size of book > [noun] > folio volume > sheet of folio1616 folium1886 1886 Statem. Land Laws Incorp. Law Soc. 26 Certificates..each constituting a distinct folium consisting of two or more pages. 2. Geometry. Categories » a. A finite loop of a nodal curve terminated at both ends by the same node. b. Folium of Descartes, a plane nodal cubic curve with real nodal tangents, and one real inflection at infinity. ΚΠ 1848 B. Price Diff. Calculus (1852) 319 To determine the nature of the point at the origin of the Folium of Descartes. c. Used with prefixes uni-, bi-, etc. to indicate a curve with one, two, etc. indentations. ΚΠ 1879 G. Salmon Treat. Higher Plane Curves (ed. 3) vi. 221 Zeuthen confines the name oval to a branch having no real bitangent or inflexions: one with a single real bitangent he calls a unifolium; one with 2, 3, or 4 such bitangents, a bifolium, trifolium or quadrifolium. This entry has not yet been fully updated (first published 1897; most recently modified version published online March 2022). < n.1848
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