'Folium' definitions:
Definition of 'folium'
From: WordNet
noun
A thin layer or stratum of (especially metamorphic) rock
Definition of 'Folium'
From: GCIDE
- Folium \Fo"li*um\, n.; pl. E. Foliums, L. Folia. [L., a leaf.]
- 1. A leaf, esp. a thin leaf or plate. [1913 Webster]
- 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. [1913 Webster] Folk