fo·li·a·tion 
(fō′lē-āshən)
(fō′lē-āshən)n.
1. The state of being in leaf.
2. Decoration with sculpted or painted foliage.
3. Architecture Decoration of an opening with cusps and foils, as in Gothic tracery.
4.
a. The act, process, or product of forming metal into thin leaf or foil.
b. The act or process of coating glass with metal foil.
5.
a. The process of numbering consecutively the leaves of a book or manuscript.
b. The leaves so numbered.
6. Geology The set of layers visible in many metamorphic rocks as a result of the flattening and stretching of mineral grains during metamorphism.