stratify

 
Pronunciation: /ˈstratɪfʌɪ/

verb (stratifies, stratifying, stratified)

[with object] (usually as adjective stratified)
  • form or arrange into strata: socially stratified cities [no object]: the residues have begun to stratify
  • arrange or classify: stratifying patients into well-defined risk groups
  • place (seeds) close together in layers in moist sand or peat to preserve them or to help them germinate: rose seeds stratified in November may be sown outdoors

Derivatives

stratification

Pronunciation: /-fɪˈkeɪʃ(ə)n/
noun