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Webster 1913 Edition


Folium

Fo′li-um

,
Noun.
;
pl. E.
Foliums
(#)
, L.
Folia
(#)
.
[L., a leaf.]
1.
A leaf, esp. a thin leaf or plate.
2.
(Geom.)
A curve of the third order, consisting of two infinite branches, which have a common asymptote. The curve has a double point, and a leaf-shaped loop; whence the name. Its equation is
x
3
+ y
3
= axy
.

Definition 2024


folium

folium

English

Noun

folium (plural foliums or folia)

  1. A leaf, especially a thin leaf or plate.
  2. (geometry) A curve of the third order, consisting of two infinite branches having a common asymptote. The curve has a double point, and a leaf-shaped loop.


Latin

Etymology

From Proto-Indo-European *bʰolh₃yom (leaf), from *bʰleh₃- (blossom, flower). Alternatively from *dʰolyom (*dʰol- "be green"), cf. the Welsh dail and Old Irish duille.

Pronunciation

  • (Classical) IPA(key): /ˈfo.li.um/, [ˈfɔ.li.ũ]
  • (Ecclesiastical) IPA(key): /ˈfo.li.um/, [ˈfɔː.li.um], [ˈfoː.li.um]

Noun

folium n (genitive foliī); second declension

  1. a leaf
  2. a petal
  3. a sheet or leaf of paper
  4. (figuratively) trifle, thing of no consequence

Declension

Second declension.

Case Singular Plural
nominative folium folia
genitive foliī foliōrum
dative foliō foliīs
accusative folium folia
ablative foliō foliīs
vocative folium folia

Derived terms

Related terms

  • foliātilis
  • foliātūra

Descendants

References