foliation (Noun) — (botany) the process of forming leaves.
foliation (Noun) — (geology) the arrangement of leaflike layers in a rock.
foliation (Noun) — (architecture) leaf-like architectural ornament.
foliation (Noun) — The production of foil by cutting or beating metal into thin leaves.
foliation (Noun) — The work of coating glass with metal foil.
foliation (Noun) — (mathematics) a set of lower-dimension manifolds that a given manifold can be decomposed into.