[ foh-lee-uh m ]
/ ˈfoʊ li əm /

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for folium

British Dictionary definitions for folium

/ (ˈfəʊlɪəm) /

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for folium

[ fōlē-əm ]

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.

Science definitions for folium

[ fōlē-əm ]

Plural folia

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.