noun, plural fo·li·a [foh-lee-uh] /ˈfoʊ li ə/.
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
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for folium
Historical Examples of folium
In its leaves we have a good example of the folium mucronatum.
Foliaceous, belonging to, or of the texture or nature of, a leaf (folium).
With Folium, in Latin, is rightly associated the word Flos; for the flower is only a group of singularly happy leaves.
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.
British Dictionary definitions for folium
noun plural -lia (-lɪə)
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
Word Origin for folium
C19: from Latin, literally: leaf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for folium
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. fo•li•a (-lē-ə)
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.