stratum

岩层

地层

社会阶层

stratum

[地] 地层, [生](组织的)层, 社会阶层

stratum

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

(hypernym)

(hyponym) ,

(derivation)

(classification) ,

2. an abstract place usually conceived as having depth; "a good actor communicates on several levels"; "a simile has at least two layers of meaning"; "the mind functions on many strata simultaneously"

(synonym) ,

(hypernym)