Pronunciation: (strat"u-fi-kā'shun), [key]
1. the act or an instance of stratifying.
2. a stratified state or appearance: the stratification of ancient ruins from eight different periods.
3. Sociol.the hierarchical or vertical division of society according to rank, caste, or class: stratification of feudal society.
a. formation of strata; deposition or occurrence in strata.
b. a stratum.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.