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folium

American  
[foh-lee-uhm] / ˈfoʊ li əm /

noun

  • folia
    plural
  1. a thin leaflike stratum or layer; a lamella.

  2. Geometry. a loop; part of a curve terminated at both ends by the same node. Equation: x 3 + y 3 = 3 axy.


folium British  
/ ˈfəʊlɪəm /

noun

  1. 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

  2. any thin leaflike layer, esp of some metamorphic rocks

"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

folium Scientific  
/ fō′lē-əm /
  • folia
    plural
  1. A thin, leaflike layer or stratum occurring especially in metamorphic rock.

  2. A plane cubic curve having a single loop, a node, and two ends asymptotic to the same line.

  3. Also called folium of Descartes


Other Word Forms

Noun Inflected Forms

Etymology

Origin of folium

1840–50; < New Latin, Latin: literally, a leaf

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

It is more remarkable for the singularity of its foliage than the beauty of its blossoms; the former exhibit a very good example of the folium pedatum of Linnæus, whence its name.

From The Botanical Magazine, Vol. 3 Or, Flower-Garden Displayed by William Curtis

Fibres from white core of folium ending in molecular layer in connexion with the dendrites of the cells of Purkinje.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" by Various

The leaf of this plant was first used for paper, whence the word paper; and leaf, or folium, for a fold of a book.

From The Botanic Garden. Part II. Containing the Loves of the Plants. a Poem. With Philosophical Notes. by Erasmus Darwin

One suggestion, based on a supposed similar use of Fr. fleuret, literally a “little flower,” for the weapon, is that foil means a leaf, and must be referred in origin to Lat. folium.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" by Various

The plants most limited were Papaveracea, Aconitum folium aconitoideum, Saxif. reniformis, Primula purpuria, Euphorbia radians, Rhododendron cereum, mentioned above, and another at 9,800 feet with similar leaves, but normal flowers, Abelia, Cerasus, Trillii sp.,

From Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries by William Griffith

Look with insight into a small corner of the musical past, we learn from Savall, and history itself is folia writ large.

From Los Angeles Times ● Feb. 3, 2020

Great veins of quartz are numerous in the mica-schists; wherever these occur the folia are much convoluted.

From Geological Observations on South America by Charles Darwin

Once out of the earth and in the sunlight they expand, assume a finer texture, and begin their usefulness as nursing leaves, "folia nutrientia."

From Arbor Day Leaves A Complete Programme For Arbor Day Observance, Including Readings, Recitations, Music, and General Information by Nathaniel Hillyer Egleston

On the lateral border of the tongue, just in front of the anterior palatine arch, are several vertical folds of mucous membrane—the folia linguæ, or foliate papillæ.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Alexander Miles

The stratification is shown by the large beds and coloured bands of limestone all dipping, like the folia, at an angle of 32 degrees N.E.

From The Student's Elements of Geology by Sir Charles Lyell

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