divide society into social classes or castes; Income distribution often stratifies a society'

form layers or strata; The rock stratifies'

develop different social levels, classes, or castes; Society stratifies when the income gap widens'

form, arrange, or deposit in layers; The fish are stratified in barrels; The rock was stratified by the force of the water; A statistician stratifies the list of names according to the addresses'

render fertile and preserve by placing between layers of earth or sand; stratify seeds'