Definition of stratifications:
(n) :
(sociology) Society's categorization of people into socioeconomic strata.
(n) :
A classification or arrangement of things into different categories or groups.
(n) :
The process leading to the formation or deposition of layers, especially of sedimentary rocks.
(n) :
(horticulture) The process of treating seeds to simulate natural conditions that the seeds must experience before germination can occur, often involving exposure to cold.
(n) :
(ecology) The vertical layering of vegetation in a forest.
(n) :
(music) A layering of musical texture.