Stratum

English word definition — powered by WordNet

NOUN

one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)

class, social class, socio-economic class

people having the same social, economic, or educational status

level, layer

an abstract place usually conceived as having depth

a subpopulation divided into a stratified sampling

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