[ foh-lee-uhm ]
/ ˈfoʊ li əm /
Save This Word!

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.
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?

Origin of folium

1840–50; <New Latin, Latin: literally, a leaf
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use folium in a sentence

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

Scientific 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.