- a thin leaflike stratum or layer; a lamella.
- Geometry. a loop; part of a curve terminated at both ends by the same node. Equation: x3 + y3 = 3axy.
Origin of folium
1840–50; < New Latin, Latin: literally, a leaf
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for folium
In its leaves we have a good example of the folium mucronatum.The Botanical Magazine, Vol. 13
Foliaceous, belonging to, or of the texture or nature of, a leaf (folium).The Elements of Botany
With Folium, in Latin, is rightly associated the word Flos; for the flower is only a group of singularly happy leaves.Proserpina, Volume 1
Reddish purple (folium) may be lowered with brown, and heightened with white lead.
Item, mix folium with white lead, lower with folium, and heighten with white lead.
- a plane geometrical curve consisting of a loop whose two ends, intersecting at a node, are asymptotic to the same line. Standard equation: x ³ + y ³=3a xy where x = y +a is the equation of the line
- any thin leaflike layer, esp of some metamorphic rocks
C19: from Latin, literally: leaf
Word Origin and History for folium
Online Etymology Dictionary, © 2010 Douglas Harper
- A broad, thin, leaflike structure, as of the cerebellar cortex.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A thin, leaflike layer or stratum occurring especially in metamorphic rock.
- A plane cubic curve having a single loop, a node, and two ends asymptotic to the same line. Also called folium of Descartes
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.